ASoC: wcd9320: Prevent calling PA event unnecessarily during ANC

When Headphone ANC is enabled, do not call the headphone PA event
in pre-power down case, only in post-power down.
Headphone PA event will only process this call in post-power
down case.

Change-Id: I61ba96ae038c2e0aa4dc3d01048f33e6a5e97d86
Signed-off-by: Damir Didjusto <damird@codeaurora.org>
diff --git a/sound/soc/codecs/wcd9320.c b/sound/soc/codecs/wcd9320.c
index 6dc2ec0..02655d4 100644
--- a/sound/soc/codecs/wcd9320.c
+++ b/sound/soc/codecs/wcd9320.c
@@ -3402,6 +3402,7 @@
 					TAIKO_A_TX_7_MBHC_EN, 0x80, 00);
 			ret |= taiko_codec_enable_anc(w, kcontrol, event);
 		}
+		break;
 	case SND_SOC_DAPM_POST_PMD:
 		ret = taiko_hph_pa_event(w, kcontrol, event);
 		break;