[PATCH 5.10 450/663] net/mlx4_core: Add missed mlx4_free_cmd_mailbox()

[Greg Kroah-Hartman]

From: Chuhong Yuan <hsleste...@gmail.com>

[ Upstream commit 8eb65fda4a6dbd59cd5de24b106a10b6ee0d2176 ]

mlx4_do_mirror_rule() forgets to call mlx4_free_cmd_mailbox() to
free the memory region allocated by mlx4_alloc_cmd_mailbox() before
an exit.
Add the missed call to fix it.

Fixes: 78efed275117 ("net/mlx4_core: Support mirroring VF DMFS rules on both 
ports")
Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
Reviewed-by: Tariq Toukan <tar...@nvidia.com>
Link: https://lore.kernel.org/r/20210221143559.390277-1-hsleste...@gmail.com
Signed-off-by: Jakub Kicinski <k...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c 
b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 1187ef1375e29..cb341372d5a35 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -4986,6 +4986,7 @@ static int mlx4_do_mirror_rule(struct mlx4_dev *dev, 
struct res_fs_rule *fs_rule
 
        if (!fs_rule->mirr_mbox) {
                mlx4_err(dev, "rule mirroring mailbox is null\n");
+               mlx4_free_cmd_mailbox(dev, mailbox);
                return -EINVAL;
        }
        memcpy(mailbox->buf, fs_rule->mirr_mbox, fs_rule->mirr_mbox_size);
-- 
2.27.0