Question - Foul away from ball after release of the shot

[bradfordwilkins]

A1 shoots a 3 pointer and after the release of the shot before it goes in, we've got excessive pushing under the hoop with B1 fouling A2.

What happens here? Basket is obviously good but then what? Team A ball under the basket? Or what?

One of the other players in the game came up afterwards and told me when he had seen this happen in a high school game before it was one free-throw for A2.

Thanks in advance.