f2fs: fix to unlock page before exit

If we got an error after lock_page, we should unlock it before exit.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

fs/f2fs/recovery.c

@@ -347,7 +347,7 @@ static int recover_data(struct f2fs_sb_info *sbi,
 		lock_page(page);
 
 		if (cp_ver != cpver_of_node(page))
-			goto unlock_out;
+			break;
 
 		entry = get_fsync_inode(head, ino_of_node(page));
 		if (!entry)
@@ -355,7 +355,7 @@ static int recover_data(struct f2fs_sb_info *sbi,
 
 		err = do_recover_data(sbi, entry->inode, page, blkaddr);
 		if (err)
-			goto out;
+			break;
 
 		if (entry->blkaddr == blkaddr) {
 			iput(entry->inode);
@@ -366,7 +366,6 @@ static int recover_data(struct f2fs_sb_info *sbi,
 		/* check next segment */
 		blkaddr = next_blkaddr_of_node(page);
 	}
-unlock_out:
 	unlock_page(page);
 out:
 	__free_pages(page, 0);