ams: globally prefer R_RETURN to return for ams::Result

stratosphere/dmnt.gen2/source/dmnt2_breakpoint_manager.cpp

@@ -48,7 +48,7 @@ namespace ams::dmnt {
             AMS_DMNT2_GDB_LOG_DEBUG("BreakPointManager::SetBreakPoint %p 0x%lx !!! Fail 0x%08x !!!\n", bp, bp->m_address, result.GetValue());
         }
 
-        return result;
+        R_RETURN(result);
     }
 
 }