I would have folded as soon as the player went all in pre flop. Most of the time the UTG player will reraise if you call. He's min raised which at this stage of a tournament shows more strength than usual. Most likely AA-QQ.
Every call from then on was incorrect, but the main problem wasn't dumping this before the flop. AQ is a great hand at this point IF no one else has got in a raise early.