Do i need to fill form 10 e again in case of revised return?

1) I am salaried class person.

2) I filed my return for AY 2017-18 on July '2016-ITR-1

3) I forgot to fill exemp income(In earlier years i was filling this )

Please help on following

1) Do i need to revise and file return again to include my exempt income?

2) I had claimed relief under section 89 and filled form 10 E online also, please inform in

case of filing revised return do i need to fill form 10 E again or the alreaady filled form 10 E

will suffice.

Please guide