Well though I've not given the previous year paper but being a JEE counselor and an ardent follower of JEE, I can easily say that at 90 marks you have not even a slight of hope to crack a seat at IIT. Even I guess not even 140 marks would suffice, 

So I would say that don't get swayed by just qualifiying the paper, it acually won't help. 

(this particular statement holds fof General and OBC category)