ALSA: pxa2xx-ac97: Remove redundant platform_set_drvdata()

Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.

Signed-off-by: Sachin Kamat <[e-mail]>
Cc: Eric Miao <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/arm/pxa2xx-ac97.c

···
 
 	if (card) {
 		snd_card_free(card);
-		platform_set_drvdata(dev, NULL);
 		pxa2xx_ac97_hw_remove(dev);
 	}