ALSA: hda/hdmi: remove redundant assignment to variable pcm_idx

Variable pcm_idx is being initialized with a value that is never read
and is being re-assigned immediately afterwards. The assignment is
redundant and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190905154826.5916-1-colin.king@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_hdmi.c

@@ -1440,7 +1440,7 @@ static bool update_eld(struct hda_codec *codec,
 	struct hdmi_spec *spec = codec->spec;
 	bool old_eld_valid = pin_eld->eld_valid;
 	bool eld_changed;
-	int pcm_idx = -1;
+	int pcm_idx;
 
 	/* for monitor disconnection, save pcm_idx firstly */
 	pcm_idx = per_pin->pcm_idx;