f2fs: fix not to set fsync/dentry mark

Otherwise, we can see stale fsync/dentry mark given by previous calls, resulting
in giving up roll-forward recovery due to wrong dentry mark.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/node.c

@@ -1458,6 +1458,9 @@ continue_unlock:
 			f2fs_wait_on_page_writeback(page, NODE, true);
 			BUG_ON(PageWriteback(page));
 
+			set_fsync_mark(page, 0);
+			set_dentry_mark(page, 0);
+
 			if (!atomic || page == last_page) {
 				set_fsync_mark(page, 1);
 				if (IS_INODE(page)) {