ALSA: hda/hdmi: Fix incorrect mutex unlock in silent_stream_disable()

The silent_stream_disable() function introduced by the commit
b1a5039 ("ALSA: hda/hdmi: fix silent stream for first playback to
DP") takes the per_pin->lock mutex, but it unlocks the wrong one,
spec->pcm_lock, which causes a deadlock.  This patch corrects it.

Fixes: b1a5039 ("ALSA: hda/hdmi: fix silent stream for first playback to DP")
Reported-by: Jan Alexander Steffens (heftig) <[email protected]>
Cc: <[email protected]>
Acked-by: Kai Vehmanen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>

Author: tiwai

sound/pci/hda/patch_hdmi.c

@@ -1733,7 +1733,7 @@ static void silent_stream_disable(struct hda_codec *codec,
 	per_pin->silent_stream = false;
 
  unlock_out:
-	mutex_unlock(&spec->pcm_lock);
+	mutex_unlock(&per_pin->lock);
 }
 
 /* update ELD and jack state via audio component */