How to redirect to wp-admin after logging from iframe for wp-login.php?

Howdy!
I am using iframe tags to embed wp-login.php and wp-login.php?action=register on some other pages on my website & it is working pretty fine but when I login from the page on my website it opens the Dashboard on the page where I am using the iframe tag so please help me so that when I login from that page then it gets redirected to the dashboard instead of displaying it in the iframe page.