omfs: fix memory leak

In the error path of omfs_fill_super(), the FS super block info
(sbi) is not being freed.  Correct this.
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Bob Copeland <me@bobcopeland.com>

fs/omfs/inode.c

@@ -529,6 +529,8 @@ static int omfs_fill_super(struct super_block *sb, void *data, int silent)
 out_brelse_bh:
 	brelse(bh);
 end:
+	if (ret)
+		kfree(sbi);
 	return ret;
 }