There are many different definitions of addiction but every definition involves the existence of harm.

No one would logically call doing good deeds an addiction unless it were causing harm. Some people flippantly call things they do often addiction but I find that a bit irritating.

What about doing good deeds was making the person addicted? That is what I would want to know. Feeling useful? Superior? Distraction? If there isn't some underlying pathology, it is not addiction.

I could see how even doing good deeds could cause harm. People who give away all their money, are manipulated by others, etc...