Sugarcrm 14 identity redirect URL issue


when I tried to log in through my sugar14 URL, it directed me to a URL like
login-us-west-2.service.sugarcrm.com/

on this URL, the login works fine and redirects to the sugar URL again 

My clients are asking if we can avoid Redirecting URL
I tried to change idpurl value from config and RR and tried again, but it is not working

also looked into documentation, didn't find anything related

Please Suggest