Play this differently ?

[rafiki]

6 handed 5/10, no read on villain. I raise KJo on button, villain 3bets in bb, I call.

Q T x with 2 spades (I have none).

Villain bets, I raise, he 3bets, I call.

Q T x 9 (puts the 3flush out)

villain bets, I call planning to raise safe river. I know I could obviously raise here.

river is a total brick. villains bets, I raise, villain 3 bets.

hero ? Anyone put in the 4th bet ?