Davis has to control his emotions. He was upset at being called for the offensive foul, then commits a stupid foul 30 feet from the basket on the next possession. Takes himself right out of the game. It's why he fouled out against Creighton too.
The first call was trash so I get why he is frustrated - but letting that frustration carry into a stupid reach in foul is inexcusable. Hopefully Sha is in his ear telling him that can't happen, for us to have a shot we need you out there.