Urgent

I have submitted a return related to AY 12-13 on 04/08/14 u/s 148.
Mistakenly i have clubbed the amount of Interest paid through challan with the amount of Tax paid and filed the return.
will any problem arise in this regard? is there any way to rectify it? 
Return filed U/s 148 can not be revised, so wht can i do now?