ALSA: hda - Fix control element allocations in VIA codec parser

The commit 5b0cb1d8
    ALSA: hda - add more NID->Control mapping
breaks the control element allocation by returning a wrong value.
Let's fix it.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_via.c

@@ -476,7 +476,7 @@ static struct snd_kcontrol_new *via_clone_control(struct via_spec *spec,
 	knew->name = kstrdup(tmpl->name, GFP_KERNEL);
 	if (!knew->name)
 		return NULL;
-	return 0;
+	return knew;
 }
 
 static void via_free_kctls(struct hda_codec *codec)