sysctl: Fix mq permission check

The kernel test robot found a typo that causes mq_permissions() to return a
useless value.

Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/r/202210052100.86dbb00a-yujie.liu@intel.com


Fixes: 7608b6a7 ("sysctl: Allow to change limits for posix messages queues")
Signed-off-by: Alexey Gladkov <legion@kernel.org>
Link: https://lkml.kernel.org/r/20221005170730.835761-1-legion@kernel.org


Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>