[ALSA] sun-cs4231: memory management fix

The chip structure is now allocated by snd_card_new()
and it must not be released by separate kfree().

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/sparc/cs4231.c

@@ -1865,8 +1865,6 @@ static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
 	if (chip->port)
 		sbus_iounmap(chip->port, chip->regs_size);
 
-	kfree(chip);
-
 	return 0;
 }
 
@@ -2037,8 +2035,6 @@ static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
 	if (chip->port)
 		iounmap(chip->port);
 
-	kfree(chip);
-
 	return 0;
 }