(loan servicer for bank motioned for relief from automatic stay to foreclose on secured interest in debtor's real estate; debtor claimed that bank only received its interest via assignment from Mortgage Electronic Registration System as original lender's nominee and, thus, had no enforceable right against debtor's property; court held that under Rooker-Feldman doctrine court accepts state court judgment of foreclosure as evidence of bank's secured creditor status which gave servicer standing to seek relief from stay; court granted servicer's motion).