ALSA: hda - Release assigned pin/cvt at error path of hdmi_pcm_open()

If the driver detects and invalid ELD, it gives an open error.
But it forgot to release the assigned pin, converter and spdif ctls
before returning.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 807a2aa..1b3b4ee 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1100,8 +1100,12 @@
 	if (!static_hdmi_pcm && eld->eld_valid) {
 		snd_hdmi_eld_update_pcm_info(eld, hinfo);
 		if (hinfo->channels_min > hinfo->channels_max ||
-		    !hinfo->rates || !hinfo->formats)
+		    !hinfo->rates || !hinfo->formats) {
+			per_cvt->assigned = 0;
+			hinfo->nid = 0;
+			snd_hda_spdif_ctls_unassign(codec, pin_idx);
 			return -ENODEV;
+		}
 	}
 
 	/* Store the updated parameters */