f2fs: remove unneeded f2fs_cp_error() in f2fs_create_whiteout()

f2fs_rename() has checked CP_ERROR_FLAG, so remove redundant check
in f2fs_create_whiteout().
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/namei.c

@@ -926,9 +926,6 @@ static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
 static int f2fs_create_whiteout(struct user_namespace *mnt_userns,
 				struct inode *dir, struct inode **whiteout)
 {
-	if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
-		return -EIO;
-
 	return __f2fs_tmpfile(mnt_userns, dir, NULL,
 				S_IFCHR | WHITEOUT_MODE, true, whiteout);
 }