Nothing will happen of course. But this is not good for any Tennis player.
OK, so then we will have to fine the entire tour. Is it good? Probably not, but it happens, it always has happened, and it's largely allowed to happen. Plus, let's not make this as he cheated through the event, or cheated through the match. He was nervous, head was spinning, he looked to his box. Cheating? Yes. But is it something that you can understand why he would do? Yeah, I can.
The way I see it, either allow coaching or do not allow the coaches to be right there for the players to see. Because as it is now, there is coaching. And it's not regulated, even though it's supposedly against the rules. Can't have the cake and eat it too, either do one or do the other.