lsm: fix default return value for vm_enough_memory

commit 866d648059d5faf53f1cd960b43fe8365ad93ea7 upstream.

1 is the return value that implements a "no-op" hook, not 0.

Cc: stable@vger.kernel.org
Fixes: 98e828a0 ("security: Refactor declaration of LSM hooks")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/lsm_hook_defs.h

@@ -48,7 +48,7 @@ LSM_HOOK(int, 0, quota_on, struct dentry *dentry)
 LSM_HOOK(int, 0, syslog, int type)
 LSM_HOOK(int, 0, settime, const struct timespec64 *ts,
 	 const struct timezone *tz)
-LSM_HOOK(int, 0, vm_enough_memory, struct mm_struct *mm, long pages)
+LSM_HOOK(int, 1, vm_enough_memory, struct mm_struct *mm, long pages)
 LSM_HOOK(int, 0, bprm_creds_for_exec, struct linux_binprm *bprm)
 LSM_HOOK(int, 0, bprm_creds_from_file, struct linux_binprm *bprm, struct file *file)
 LSM_HOOK(int, 0, bprm_check_security, struct linux_binprm *bprm)