[ALSA] sound/isa/cmi8330.c: check kmalloc() return value

Check the return value of kmalloc() in function snd_cmi8330_pnp(),
in file sound/isa/cmi8330.c.
Signed-off-by: Amit Choudhary <amit2030@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/isa/cmi8330.c

@@ -289,6 +289,8 @@ static int __devinit snd_cmi8330_pnp(int dev, struct snd_cmi8330 *acard,
 	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
 	int err;
 
+	if (!cfg)
+		return -ENOMEM;
 	acard->cap = pnp_request_card_device(card, id->devs[0].id, NULL);
 	if (acard->cap == NULL) {
 		kfree(cfg);