[PATCH] uml: hostfs failed mount handling

This cleans up the error handling and fixes a crash if a hostfs mount fails.
Signed-off-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/hostfs/hostfs_kern.c

@@ -991,13 +991,17 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
 		goto out_put;
 
 	err = read_inode(root_inode);
-	if(err)
-		goto out_put;
+	if(err){
+                /* No iput in this case because the dput does that for us */
+                dput(sb->s_root);
+                sb->s_root = NULL;
+		goto out_free;
+        }
 
 	return(0);
 
  out_put:
-	iput(root_inode);
+        iput(root_inode);
  out_free:
 	kfree(name);
  out: