ALSA: opl4: use list_move_tail instead of list_del/list_add_tail

Using list_move_tail() instead of list_del() + list_add_tail().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/opl4/opl4_synth.c

@@ -504,8 +504,7 @@ void snd_opl4_note_on(void *private_data, int note, int vel, struct snd_midi_cha
 	spin_lock_irqsave(&opl4->reg_lock, flags);
 	for (i = 0; i < voices; i++) {
 		voice[i] = snd_opl4_get_voice(opl4);
-		list_del(&voice[i]->list);
-		list_add_tail(&voice[i]->list, &opl4->on_voices);
+		list_move_tail(&voice[i]->list, &opl4->on_voices);
 		voice[i]->chan = chan;
 		voice[i]->note = note;
 		voice[i]->velocity = vel & 0x7f;
@@ -555,8 +554,7 @@ void snd_opl4_note_on(void *private_data, int note, int vel, struct snd_midi_cha
 
 static void snd_opl4_voice_off(struct snd_opl4 *opl4, struct opl4_voice *voice)
 {
-	list_del(&voice->list);
-	list_add_tail(&voice->list, &opl4->off_voices);
+	list_move_tail(&voice->list, &opl4->off_voices);
 
 	voice->reg_misc &= ~OPL4_KEY_ON_BIT;
 	snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, voice->reg_misc);
@@ -571,8 +569,7 @@ void snd_opl4_note_off(void *private_data, int note, int vel, struct snd_midi_ch
 
 static void snd_opl4_terminate_voice(struct snd_opl4 *opl4, struct opl4_voice *voice)
 {
-	list_del(&voice->list);
-	list_add_tail(&voice->list, &opl4->off_voices);
+	list_move_tail(&voice->list, &opl4->off_voices);
 
 	voice->reg_misc = (voice->reg_misc & ~OPL4_KEY_ON_BIT) | OPL4_DAMP_BIT;
 	snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, voice->reg_misc);