When there is a redirect_to in the URL, redirect to there

When there is a redirect_to as $_GET parameter in the URL, I want the user to be redirected to this page instead of what I filled in in the back-end of the wordpress admin panel.

For example:

When a subscriber logs in, I want him to go to https://example.com.
But when a user tried to visit a page for example https://example.com/test and I have a auth_redirect() function in there, it will send the user to: https://example.com/login?redirect_to=https://example.com/test.

Now I do not want the user to be redirected to https://example.com but to https://example.com/test like given in the URL.