mlx5: Fix error flow in add_keys

If mlx5_core_create_mkey fails, decrease the pending counter to undo the
previous increment.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 4c89b64aa9cf..5a80dd993761 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -159,6 +159,9 @@ static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
                                             sizeof(*in), reg_mr_callback,
                                             mr, &mr->out);
                 if (err) {
+                        spin_lock_irq(&ent->lock);
+                        ent->pending--;
+                        spin_unlock_irq(&ent->lock);
                         mlx5_ib_warn(dev, "create mkey failed %d\n", err);
                         kfree(mr);
                         break;