inotify: Fix error return code assignment flow.

If error code is initialized -EINVAL, there is no need to assign -EINVAL.

Link: https://lore.kernel.org/r/20200426143316.29877-1-her0gyugyu@gmail.comSigned-off-by: youngjun <her0gyugyu@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/notify/inotify/inotify_user.c

@@ -764,20 +764,18 @@ SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
 	struct fsnotify_group *group;
 	struct inotify_inode_mark *i_mark;
 	struct fd f;
-	int ret = 0;
+	int ret = -EINVAL;
 
 	f = fdget(fd);
 	if (unlikely(!f.file))
 		return -EBADF;
 
 	/* verify that this is indeed an inotify instance */
-	ret = -EINVAL;
 	if (unlikely(f.file->f_op != &inotify_fops))
 		goto out;
 
 	group = f.file->private_data;
 
-	ret = -EINVAL;
 	i_mark = inotify_idr_find(group, wd);
 	if (unlikely(!i_mark))
 		goto out;