Input: s3c2410_ts - fix s3c2410ts_probe error path

Use input_free_device() to free devices that have not been registered.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/s3c2410_ts.c

@@ -350,7 +350,7 @@ static int __devinit s3c2410ts_probe(struct platform_device *pdev)
  err_tcirq:
 	free_irq(ts.irq_tc, ts.input);
  err_inputdev:
-	input_unregister_device(ts.input);
+	input_free_device(ts.input);
  err_iomap:
 	iounmap(ts.io);
  err_clk: