Fixed #30977 -- Optimized PasswordResetForm.save() a bit.

Moved site variables assignment outside of the loop.

django/contrib/auth/forms.py

@@ -286,13 +286,13 @@ class PasswordResetForm(forms.Form):
         user.
         """
         email = self.cleaned_data["email"]
-        for user in self.get_users(email):
         if not domain_override:
             current_site = get_current_site(request)
             site_name = current_site.name
             domain = current_site.domain
         else:
             site_name = domain = domain_override
+        for user in self.get_users(email):
             context = {
                 'email': email,
                 'domain': domain,