net/mlx5: fix missing mutex_unlock in mlx5_fw_fatal_reporter_err_work()

stable inclusion
from stable-v5.10.165
commit be1067427abdb99148da5ecde4e5962d0f05c0e5
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7T7G4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=be1067427abdb99148da5ecde4e5962d0f05c0e5



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

commit 90e7cb78 upstream.

Add missing mutex_unlock() before returning from
mlx5_fw_fatal_reporter_err_work().

Fixes: 9078e843 ("net/mlx5: Avoid recovery in probe flows")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>