[PATCH 4.8 077/125] IB/mlx5: Fix steering resource leak

[Greg Kroah-Hartman]

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maor Gottlieb <maorg@xxxxxxxxxxxx>

commit 7055a29471eebf4b62687944694222635ed44b09 upstream.

Fix multicast flow rule leak on adding unicast rule failure.

Fixes: 038d2ef87572 ('IB/mlx5: Add flow steering support')
Signed-off-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/infiniband/hw/mlx5/main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1843,6 +1843,7 @@ static struct mlx5_ib_flow_handler *crea
 						 &leftovers_specs[LEFTOVERS_UC].flow_attr,
 						 dst);
 		if (IS_ERR(handler_ucast)) {
+			mlx5_del_flow_rule(handler->rule);
 			kfree(handler);
 			handler = handler_ucast;
 		} else {