ALSA: nm256: Fix error return code in snd_nm256_create()

If pci_request_regions() fails, it should return error
code in snd_nm256_create().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210720135237.3424521-1-yangyingliang@huawei.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/nm256/nm256.c

@@ -1478,7 +1478,8 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci)
 	chip->buffer_addr = pci_resource_start(pci, 0);
 	chip->cport_addr = pci_resource_start(pci, 1);
 
-	if (pci_request_regions(pci, card->driver))
+	err = pci_request_regions(pci, card->driver);
+	if (err < 0)
 		return err;
 
 	/* Init the memory port info.  */