fix various RecentRom failures

fixes 02365dc

Author: Morilli

src/BizHawk.Client.EmuHawk/MainForm.cs

@@ -3670,9 +3670,6 @@ private bool LoadRomInternal(string path, LoadRomArgs args, out bool failureIsFr
 					launchLibretroCore: ioaRetro?.CorePath,
 					forcedCoreName: forcedCoreName);
 
-				var openAdvancedArgs = $"*{OpenAdvancedSerializer.Serialize(ioa)}";
-				Config.RecentRoms.Add(openAdvancedArgs);
-
 				// we need to replace the path in the OpenAdvanced with the canonical one the user chose.
 				// It can't be done until loader.LoadRom happens (for CanonicalFullPath)
 				// i'm not sure this needs to be more abstractly engineered yet until we have more OpenAdvanced examples
@@ -3691,6 +3688,9 @@ private bool LoadRomInternal(string path, LoadRomArgs args, out bool failureIsFr
 					oaMame.Path = loader.CanonicalFullPath;
 				}
 
+				var openAdvancedArgs = $"*{OpenAdvancedSerializer.Serialize(ioa)}";
+				Config.RecentRoms.Add(openAdvancedArgs);
+
 				if (result)
 				{
 					Emulator.Dispose();