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

libraries/libstratosphere/source/htclow/driver/htclow_socket_driver.cpp

@@ -226,7 +226,7 @@ namespace ams::htclow::driver {
         }
 
         /* Return our connection result. */
-        return m_connect_result;
+        R_RETURN(m_connect_result);
     }
 
     void SocketDriver::Shutdown() {

libraries/libstratosphere/source/htclow/driver/htclow_usb_driver.cpp

@@ -45,7 +45,7 @@ namespace ams::htclow::driver {
         SetUsbAvailabilityChangeCallback(OnUsbAvailabilityChange, this);
 
         /* Initialize the interface. */
-        return InitializeUsbInterface();
+        R_RETURN(InitializeUsbInterface());
     }
 
     void UsbDriver::Close() {

libraries/libstratosphere/source/htclow/driver/htclow_usb_impl.cpp

@@ -214,7 +214,7 @@ namespace ams::htclow::driver {
                     R_THROW(htclow::ResultUsbDriverUnknownError());
                 }
             } else {
-                return result;
+                R_RETURN(result);
             }
         }