ASoC: hdac_hdmi: remove redundant check for !port condition

The !port check is redundant as it being performed in the following
check. Remove it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/hdac_hdmi.c

@@ -1961,9 +1961,6 @@ static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx)
 
 	port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
 
-	if (!port)
-		return 0;
-
 	if (!port || !port->eld.eld_valid)
 		return 0;