ALSA: emu10k1: Deliver indirect-PCM transfer error

Now that the indirect-PCM transfer helper gives back an error, we
should return the error from ack callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emupcm.c

@@ -1632,8 +1632,8 @@ static int snd_emu10k1_fx8010_playback_transfer(struct snd_pcm_substream *substr
 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 	struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
 
-	snd_pcm_indirect_playback_transfer(substream, &pcm->pcm_rec, fx8010_pb_trans_copy);
-	return 0;
+	return snd_pcm_indirect_playback_transfer(substream, &pcm->pcm_rec,
+						  fx8010_pb_trans_copy);
 }
 
 static int snd_emu10k1_fx8010_playback_hw_params(struct snd_pcm_substream *substream,