[PATCH 5.4 030/142] net/mlx4_core: fix a memory leak bug.

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000...@umn.edu>

commit febfd9d3c7f74063e8e630b15413ca91b567f963 upstream.

In function mlx4_opreq_action(), pointer "mailbox" is not released,
when mlx4_cmd_box() return and error, causing a memory leak bug.
Fix this issue by going to "out" label, mlx4_free_cmd_mailbox() can
free this pointer.

Fixes: fe6f700d6cbb ("net/mlx4_core: Respond to operation request by firmware")
Signed-off-by: Qiushi Wu <wu000...@umn.edu>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/net/ethernet/mellanox/mlx4/fw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -2734,7 +2734,7 @@ void mlx4_opreq_action(struct work_struc
                if (err) {
                        mlx4_err(dev, "Failed to retrieve required operation: 
%d\n",
                                 err);
-                       return;
+                       goto out;
                }
                MLX4_GET(modifier, outbox, GET_OP_REQ_MODIFIER_OFFSET);
                MLX4_GET(token, outbox, GET_OP_REQ_TOKEN_OFFSET);