minix: fix error handling in minix_delete_entry

If minix_prepare_chunk fails, updating c/mtime and marking the
dir inode dirty is wrong, as the inode hasn't been modified.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Author: Christoph Hellwig

fs/minix/dir.c

@@ -297,18 +297,20 @@ int minix_delete_entry(struct minix_dir_entry *de, struct page *page)
 
 	lock_page(page);
 	err = minix_prepare_chunk(page, pos, len);
-	if (err == 0) {
-		if (sbi->s_version == MINIX_V3)
-			((minix3_dirent *) de)->inode = 0;
-		else
-			de->inode = 0;
-		err = dir_commit_chunk(page, pos, len);
-	} else {
+	if (err) {
 		unlock_page(page);
+		return err;
 	}
+	if (sbi->s_version == MINIX_V3)
+		((minix3_dirent *)de)->inode = 0;
+	else
+		de->inode = 0;
+	err = dir_commit_chunk(page, pos, len);
+	if (err)
+		return err;
 	inode->i_ctime = inode->i_mtime = current_time(inode);
 	mark_inode_dirty(inode);
-	return err;
+	return 0;
 }
 
 int minix_make_empty(struct inode *inode, struct inode *dir)