You probably just totally screwed up the engine.

Just kidding, there more than likely no damage at all. If there is a problem more than likely its covered under warranty. Just monitor it for awhile and see, Mine comes and goes, most of the time its not there but every once in a while I hear it. These bikes can take a lot without a problem. Heck thats why Goldwings have been around for a while and pretty trouble free. This means they have had many miles to iron out any problems in the drive train just so there is no problem.