mlx4_en: Memory leak on completion queue free

If port is being destroyed without being activated before,
CQ resources are not freed.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/mlx4/en_cq.c b/drivers/net/mlx4/en_cq.c
index 1368a8010af4..1a936f4db2b7 100644
--- a/drivers/net/mlx4/en_cq.c
+++ b/drivers/net/mlx4/en_cq.c
@@ -68,6 +68,8 @@ int mlx4_en_create_cq(struct mlx4_en_priv *priv,
         err = mlx4_en_map_buffer(&cq->wqres.buf);
         if (err)
                 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
+        else
+                cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
 
         return err;
 }
@@ -82,7 +84,6 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
         cq->mcq.arm_db     = cq->wqres.db.db + 1;
         *cq->mcq.set_ci_db = 0;
         *cq->mcq.arm_db    = 0;
-        cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
         memset(cq->buf, 0, cq->buf_size);
 
         err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,