f2fs: remove the unnecessary check in f2fs_xattr_fiemap

Whehter or not error occurs, checking "err == 1" is unnecessary
in f2fs_xattr_fiemap(), and just remove it here.
Signed-off-by: NZhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: NChao Yu <chao@kernel.org>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/data.c

@@ -1816,7 +1816,7 @@ static int f2fs_xattr_fiemap(struct inode *inode,
 
 		err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
 		trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
-		if (err || err == 1)
+		if (err)
 			return err;
 	}