Regular distributions from retirement accounts made after the death of the participant are only payable to the beneficiary of the account. Contact the bank to obtain a correction of the Form 1099-R to show the correct recipient of the distribution.
(The only case where a Form 1099-R might have been properly issued in the name of the decedent after death is if the estate of the decedent requested a return of contribution or recharacterization of a traditional or Roth IRA contribution or Roth conversion on behalf of the decedent. In these cases the Form 1099-R would include code P or code R in box 7 and would be reported on the decedent's 2017 tax return, amending if not previously reported.)
