touch:scx0500633:Add missing cleanup code when probe routine exits with error

The regulator was left on in error case, but devm/regulator core
complained about it.

recipes-kernel/touchdriver/scx0500633/src/scx0500633.c

@@ -774,6 +774,8 @@ err_unregister_device:
 err_free_gpios:
 	touch_gpio_free(tsdata->gpios);
 err_free_tsdata:
+	if(tsdata->regulator && !IS_ERR(tsdata->regulator))
+        regulator_disable(tsdata->regulator);
 	return error;
 }