Dear Vishal,
I think that you are more concerned about your relieving on the expiry of your notice period now stands short by 5 days.
At the same time, your post is also conspicuously silent about the following:
1) Whether your resignation was already accepted by the Bank or not so as to prompt you to presume that you are on notice period?
2) When the charge sheet was served on you - before or after the submission of your resignation?
When the charges are already pending at whatever stage, no employer would accept the resignation of such a delinquent employee.
Therefore, I would also suggest you not to walk out on your own after the expiration of 90 days. It is likely to escalate the situation to abscondence, setting you ex parte and dismissal so as to affect your future career.