Save config after applying new changes

If anything goes wrong with applying the changes they will
not be persisted to disk and also ruin your day after a restart.

platforms/common/src/main/java/dynamic_fps/impl/DynamicFPSMod.java

@@ -107,9 +107,8 @@ public static void toggleDisabled() {
 	}
 
 	public static void onConfigChanged() {
-		modConfig.save();
-
 		doInit();
+		modConfig.save();
 		checkForStateChanges(); // The unplugged state may now be enabled or disabled
 	}