After Steve teaches Tony how to fight, Tony applies those skills in a plan to expose Justin Hammer and clear Iron Man's name. And yes, he's ultimately successful. Alas, not everyone agrees that Iron Man can now be trusted:

Ouch, ouch, ouch. I know this really hurts Tony. After all, he once changed the outer appearance of his armor explicitly so he wouldn't frighten women and children. That little girl's fear almost certainly pierces this man's chivalric core.