diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 16ac54c9819f24c113ad02f594a47608a004a828..045f8cdbd303deba81e60c5f1f52330b536b9617 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -199,7 +199,7 @@ static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 
 static int sq_overhead(enum ib_qp_type qp_type)
 {
-	int size;
+	int size = 0;
 
 	switch (qp_type) {
 	case IB_QPT_XRC_INI: