If (and a big if, because he has already been penalised by the referee), he is cited, in terms of standardised guidance for Illegal and/or Foul Play and Misconduct, IRB Regulation 17 applies, and is used by nearly all judiciaries to assist to determine sanctions for citings.
Judiciary Entry Point Based on Scale of Seriousness of the Player’s conduct, which constitutes the offending.
Law No 10.4(e) Dangerous tackling of an Opponent including early or late and including the action known as the “stiff arm tackle”
Lower End 2 weeks, Mid Range 6 weeks, Top End 10+ weeks, Maximum Sanction 52 weeks
All sorts of things come out at judiciary, and if found guilty, the judiciary take past conduct, intent, remorse, etc into consideration before finalising any sanction.
Regardless if this doesn't go to judiciary, I'd reckon that the Wellington Coach would not be happy with the lad, and he'd most likely find himself riding the pine or even dropped from the 23 for a couple of weeks. The Bay put 21 points on Wellington while Fifita was on the naughty boys chair.
