diff --git a/drivers/common/mlx5/mlx5_common_mr.c b/drivers/common/mlx5/mlx5_common_mr.c
index 2e039a4e70..8fd65484cf 100644
--- a/drivers/common/mlx5/mlx5_common_mr.c
+++ b/drivers/common/mlx5/mlx5_common_mr.c
@@ -271,6 +271,34 @@ mlx5_mr_btree_dump(struct mlx5_mr_btree *bt __rte_unused)
 #endif
 }
 
+/**
+ * Initialize per-queue MR control descriptor.
+ *
+ * @param mr_ctrl
+ *   Pointer to MR control structure.
+ * @param dev_gen_ptr
+ *   Pointer to generation number of global cache.
+ * @param socket
+ *   NUMA socket on which memory must be allocated.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_mr_ctrl_init(struct mlx5_mr_ctrl *mr_ctrl, uint32_t *dev_gen_ptr,
+		  int socket)
+{
+	if (mr_ctrl == NULL) {
+		rte_errno = EINVAL;
+		return -rte_errno;
+	}
+	/* Save pointer of global generation number to check memory event. */
+	mr_ctrl->dev_gen_ptr = dev_gen_ptr;
+	/* Initialize B-tree and allocate memory for bottom-half cache table. */
+	return mlx5_mr_btree_init(&mr_ctrl->cache_bh, MLX5_MR_BTREE_CACHE_N,
+				  socket);
+}
+
 /**
  * Find virtually contiguous memory chunk in a given MR.
  *
diff --git a/drivers/common/mlx5/mlx5_common_mr.h b/drivers/common/mlx5/mlx5_common_mr.h
index 15489cd399..1392d9b55a 100644
--- a/drivers/common/mlx5/mlx5_common_mr.h
+++ b/drivers/common/mlx5/mlx5_common_mr.h
@@ -124,6 +124,9 @@ mlx5_mr_lookup_lkey(struct mr_cache_entry *lkp_tbl, uint16_t *cached_idx,
 	return UINT32_MAX;
 }
 
+__rte_internal
+int mlx5_mr_ctrl_init(struct mlx5_mr_ctrl *mr_ctrl, uint32_t *dev_gen_ptr,
+		      int socket);
 __rte_internal
 int mlx5_mr_btree_init(struct mlx5_mr_btree *bt, int n, int socket);
 __rte_internal
diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map
index 2baf82cad5..f786287986 100644
--- a/drivers/common/mlx5/version.map
+++ b/drivers/common/mlx5/version.map
@@ -108,6 +108,7 @@ INTERNAL {
 	mlx5_mr_btree_free;
 	mlx5_mr_btree_init;
 	mlx5_mr_create_primary;
+    mlx5_mr_ctrl_init;
 	mlx5_mr_dump_cache;
 	mlx5_mr_flush_local_cache;
 	mlx5_mr_free;
diff --git a/drivers/compress/mlx5/mlx5_compress.c b/drivers/compress/mlx5/mlx5_compress.c
index e1c45be259..7e297778ef 100644
--- a/drivers/compress/mlx5/mlx5_compress.c
+++ b/drivers/compress/mlx5/mlx5_compress.c
@@ -206,8 +206,8 @@ mlx5_compress_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
 		return -rte_errno;
 	}
 	dev->data->queue_pairs[qp_id] = qp;
-	if (mlx5_mr_btree_init(&qp->mr_ctrl.cache_bh, MLX5_MR_BTREE_CACHE_N,
-			       priv->dev_config.socket_id)) {
+	if (mlx5_mr_ctrl_init(&qp->mr_ctrl, &priv->mr_scache.dev_gen,
+			      priv->dev_config.socket_id)) {
 		DRV_LOG(ERR, "Cannot allocate MR Btree for qp %u.",
 			(uint32_t)qp_id);
 		rte_errno = ENOMEM;
@@ -254,8 +254,6 @@ mlx5_compress_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
 		DRV_LOG(ERR, "Can't change SQ state to ready.");
 		goto err;
 	}
-	/* Save pointer of global generation number to check memory event. */
-	qp->mr_ctrl.dev_gen_ptr = &priv->mr_scache.dev_gen;
 	DRV_LOG(INFO, "QP %u: SQN=0x%X CQN=0x%X entries num = %u",
 		(uint32_t)qp_id, qp->sq.sq->id, qp->cq.cq->id, qp->entries_n);
 	return 0;
diff --git a/drivers/crypto/mlx5/mlx5_crypto.c b/drivers/crypto/mlx5/mlx5_crypto.c
index d553dd3df5..af32e0a2ac 100644
--- a/drivers/crypto/mlx5/mlx5_crypto.c
+++ b/drivers/crypto/mlx5/mlx5_crypto.c
@@ -712,14 +712,13 @@ mlx5_crypto_queue_pair_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 		DRV_LOG(ERR, "Failed to register QP umem.");
 		goto error;
 	}
-	if (mlx5_mr_btree_init(&qp->mr_ctrl.cache_bh, MLX5_MR_BTREE_CACHE_N,
-			       priv->dev_config.socket_id) != 0) {
+	if (mlx5_mr_ctrl_init(&qp->mr_ctrl, &priv->mr_scache.dev_gen,
+			      priv->dev_config.socket_id) != 0) {
 		DRV_LOG(ERR, "Cannot allocate MR Btree for qp %u.",
 			(uint32_t)qp_id);
 		rte_errno = ENOMEM;
 		goto error;
 	}
-	qp->mr_ctrl.dev_gen_ptr = &priv->mr_scache.dev_gen;
 	attr.pd = priv->cdev->pdn;
 	attr.uar_index = mlx5_os_get_devx_uar_page_id(priv->uar);
 	attr.cqn = qp->cq_obj.cq->id;
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index f7f71f933e..479ea1324c 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1452,13 +1452,11 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		goto error;
 	}
 	tmpl->type = MLX5_RXQ_TYPE_STANDARD;
-	if (mlx5_mr_btree_init(&tmpl->rxq.mr_ctrl.cache_bh,
-			       MLX5_MR_BTREE_CACHE_N, socket)) {
+	if (mlx5_mr_ctrl_init(&tmpl->rxq.mr_ctrl,
+			      &priv->sh->share_cache.dev_gen, socket)) {
 		/* rte_errno is already set. */
 		goto error;
 	}
-	/* Rx queues don't use this pointer, but we want a valid structure. */
-	tmpl->rxq.mr_ctrl.dev_gen_ptr = &priv->sh->share_cache.dev_gen;
 	tmpl->socket = socket;
 	if (dev->data->dev_conf.intr_conf.rxq)
 		tmpl->irq = 1;
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index a9c8ce52c9..4b027d6807 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -1124,13 +1124,11 @@ mlx5_txq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		rte_errno = ENOMEM;
 		return NULL;
 	}
-	if (mlx5_mr_btree_init(&tmpl->txq.mr_ctrl.cache_bh,
-			       MLX5_MR_BTREE_CACHE_N, socket)) {
+	if (mlx5_mr_ctrl_init(&tmpl->txq.mr_ctrl,
+			      &priv->sh->share_cache.dev_gen, socket)) {
 		/* rte_errno is already set. */
 		goto error;
 	}
-	/* Save pointer of global generation number to check memory event. */
-	tmpl->txq.mr_ctrl.dev_gen_ptr = &priv->sh->share_cache.dev_gen;
 	MLX5_ASSERT(desc > MLX5_TX_COMP_THRESH);
 	tmpl->txq.offloads = conf->offloads |
 			     dev->data->dev_conf.txmode.offloads;
diff --git a/drivers/regex/mlx5/mlx5_regex_control.c b/drivers/regex/mlx5/mlx5_regex_control.c
index f58365665b..cd5dfa34e4 100644
--- a/drivers/regex/mlx5/mlx5_regex_control.c
+++ b/drivers/regex/mlx5/mlx5_regex_control.c
@@ -243,10 +243,8 @@ mlx5_regex_qp_setup(struct rte_regexdev *dev, uint16_t qp_ind,
 		nb_sq_config++;
 	}
 
-	/* Save pointer of global generation number to check memory event. */
-	qp->mr_ctrl.dev_gen_ptr = &priv->mr_scache.dev_gen;
-	ret = mlx5_mr_btree_init(&qp->mr_ctrl.cache_bh, MLX5_MR_BTREE_CACHE_N,
-				 rte_socket_id());
+	ret = mlx5_mr_ctrl_init(&qp->mr_ctrl, &priv->mr_scache.dev_gen,
+				rte_socket_id());
 	if (ret) {
 		DRV_LOG(ERR, "Error setting up mr btree");
 		goto err_btree;
