Subject of an infinitive?

I come across the sentence below,

"It was good OF him to buy all the food and drink"

Should it be...

""It was good FOR him to buy all the food and drink"

As I know, if an infinitive has its own subject, the "infinitive subject: is introduced by "for". (for...to...)

Is there any exception? Can I use "of" instead of "for"?

Thanks a million.