ALSA: pcsp: Fix the order of input device unregistration

The current code may access to the already freed object.  The input
device must be accessed and unregistered before freeing the top level
sound object.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/pcsp/pcsp.c

@@ -188,8 +188,8 @@ static int pcsp_probe(struct platform_device *dev)
 static int pcsp_remove(struct platform_device *dev)
 {
 	struct snd_pcsp *chip = platform_get_drvdata(dev);
-	alsa_card_pcsp_exit(chip);
 	pcspkr_input_remove(chip->input_dev);
+	alsa_card_pcsp_exit(chip);
 	return 0;
 }