No one does any good that follows from religious belief. Zero. The key phrase is "follows from". (It's mostly irrelevant to this argument whether or not good follows from God; the argument is whether or not doing good follows from belief in God.)
It's either the case that following religious belief is doing good, or it's the case that we can talk about doing good independently of religious belief. The first case isn't an argument, it's a definition. It's obvious that the religious assume that we can talk about doing good independently of belief. When they argue the point, they discuss examples like feeding the poor, providing medical care, helping old ladies across the street, etc. They usually don't mention their efforts to stamp out idolatry, polytheism, conversions under torture, wars of aggression, and
By definition, though, determining that something is good determines that doing that something is preferable, that a person does actually want to do it (all things considered); that's what "good" has to mean. But if you already want to do something, and you can tell that people in general want to do it independently of religious belief, then there's no additional justification necessary to actually do it.
There's only two possibilities for the connection between good behavior and religious belief.
One possibility is that the person really doesn't want to do what other people typically consider good; they do "good" only because they fear some bullshit fantastical posthumous reward/punishment. Anyone who argues that they don't want to kill me because of their religious belief is basically telling me that they're a dangerous asshole who would otherwise want to kill me. And because most people get their information about religious belief from some authority, they're also telling me that if some authority convinced them that God wanted them to kill me, they would cheerfully do so.
Happily my innate skepticism and ordinary psychological knowledge usually impels me to conclude that people making such an argument are simply deluded and stupid, and not actually inherently evil. (With the exception of those such as future toddler chopper Vox Day, whom I think really would cheerfully kill toddlers if some authority told him to.)
The more benign alternative is that one's religious belief follows from one's desires. Almost all human societies have adopted the metaphor of religious belief to express their (usually their higher-order, more abstract) beliefs about what is good.
This sort of reverse entailment is at best vacuous and at worst deeply confusing, but it's definitely the case that at best doing good doesn't follow from religious belief, but the other way around.