[ALSA] Don't set up the front stream twice

HDA Codec driver
Don't set up the front stream twice in the loop.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_codec.c

@@ -1571,7 +1571,7 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_multi_o
 		/* headphone out will just decode front left/right (stereo) */
 		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 0, format);
 	/* surrounds */
-	for (i = 0; i < mout->num_dacs; i++) {
+	for (i = 1; i < mout->num_dacs; i++) {
 		if (i == HDA_REAR && chs == 2) /* copy front to rear */
 			snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0, format);
 		else if (chs >= (i + 1) * 2) /* independent out */