f2fs: remove some dead code

'ret' is known to be 0 at the point.
So these lines of code should just be removed.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/node.c

@@ -2066,7 +2066,6 @@ int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
 	struct list_head *head = &sbi->fsync_node_list;
 	unsigned long flags;
 	unsigned int cur_seq_id = 0;
-	int ret2, ret = 0;
 
 	while (seq_id && cur_seq_id < seq_id) {
 		spin_lock_irqsave(&sbi->fsync_node_lock, flags);
@@ -2087,16 +2086,9 @@ int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
 		f2fs_wait_on_page_writeback(page, NODE, true, false);
 
 		put_page(page);
-
-		if (ret)
-			break;
 	}
 
-	ret2 = filemap_check_errors(NODE_MAPPING(sbi));
-	if (!ret)
-		ret = ret2;
-
-	return ret;
+	return filemap_check_errors(NODE_MAPPING(sbi));
 }
 
 static int f2fs_write_node_pages(struct address_space *mapping,