If you're about to protest that infinite goodness, by definition, wouldn't allow evil to exist, you're not alone.
Classic non-sequitur.
The key being ''infinite goodness'' - the presence of evil means that goodness is not infinite. The presence of evil means that God is part good, part evil
Infinite goodness does not presuppose infinite evil because evil can be created--therefore the argument fails.
If God creates Evil out of His so called infinite goodness, He cannot be infinitely Good, hence the argument stands
