ext3: remove unneeded check in ext3_ordered_writepage()

We already know "ret" is zero so there is no need to do:

		if (!ret)
			ret = err;

We can just assign ret directly instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/ext3/inode.c

@@ -1673,12 +1673,9 @@ static int ext3_ordered_writepage(struct page *page,
 	 * block_write_full_page() succeeded.  Otherwise they are unmapped,
 	 * and generally junk.
 	 */
-	if (ret == 0) {
-		err = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE,
+	if (ret == 0)
+		ret = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE,
 					NULL, journal_dirty_data_fn);
-		if (!ret)
-			ret = err;
-	}
 	walk_page_buffers(handle, page_bufs, 0,
 			PAGE_CACHE_SIZE, NULL, bput_one);
 	err = ext3_journal_stop(handle);