ams: use R_SUCCEED, R_THROW globally

libraries/libstratosphere/source/capsrv/server/decodersrv/decodersrv_decoder_control_server_manager.cpp

@@ -29,7 +29,7 @@ namespace ams::capsrv::server {
         /* Initialize the idle event, we're idle initially. */
         os::InitializeEvent(std::addressof(m_idle_event), true, os::EventClearMode_ManualClear);
 
-        return ResultSuccess();
+        R_SUCCEED();
     }
 
     void DecoderControlServerManager::Finalize() {

libraries/libstratosphere/source/capsrv/server/decodersrv/decodersrv_decoder_control_service.cpp

@@ -64,7 +64,7 @@ namespace ams::capsrv::server {
 
             /* We succeeded, so we shouldn't clear the output memory. */
             clear_guard.Cancel();
-            return ResultSuccess();
+            R_SUCCEED();
         }
 
     }