f2fs: drop dirty node pages when cp is in error status

Otherwise, writeback is going to fall in a loop to flush dirty inode forever
before getting SBI_CLOSING.

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

fs/f2fs/node.c

@@ -1549,13 +1549,10 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
 	trace_f2fs_writepage(page, NODE);
 
 	if (unlikely(f2fs_cp_error(sbi))) {
-		if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
+		ClearPageUptodate(page);
-			ClearPageUptodate(page);
+		dec_page_count(sbi, F2FS_DIRTY_NODES);
-			dec_page_count(sbi, F2FS_DIRTY_NODES);
+		unlock_page(page);
-			unlock_page(page);
+		return 0;
-			return 0;
-		}
-		goto redirty_out;
 	}
 
 	if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))