switch open-coded instances of d_make_root() to new helper

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 8137fb3..7b4c537 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -430,15 +430,13 @@
 
 	sb->s_d_op = &hfs_dentry_operations;
 	res = -ENOMEM;
-	sb->s_root = d_alloc_root(root_inode);
+	sb->s_root = d_make_root(root_inode);
 	if (!sb->s_root)
-		goto bail_iput;
+		goto bail_no_root;
 
 	/* everything's okay */
 	return 0;
 
-bail_iput:
-	iput(root_inode);
 bail_no_root:
 	printk(KERN_ERR "hfs: get root inode failed.\n");
 bail: