MFS Roth penalty

My husband and I married last year. We decided to file separately. He does not have a Roth but I do. He has already filed his taxes. I did not know I’d be penalized for my Roth contribution if we filed separately (and my magi is over $10,000). 

How long does this 6% penalty apply? If we decide to file jointly next year, do I still have to pay the penalty?