Wrong .
He accept the fact it’s over the line then decides to award the goal.
Hawkeye just deals in fact , over or not it dosnt make decisions.
Sorry but that's just not how it works. The ref has no power I regards to hawkeye. He doesnt decide to award a goal at all. He simply implements the technologies decision.
If he got told by hawkeye it's a goal and didn't give it. He would be up for review.
There is no decision made by him. He just does as he's told. For the exact same reason that the ref is rumoured to have said he thought hawkeye was wrong but couldnt change the decision.