asoc: wcd: add NULL pointer check for wcd component

add NULL pointer check for wcd component.

Change-Id: Icfba04b689ace34f8f82b3ee58dd79ce139861b5
Signed-off-by: Yuhui Zhao <quic_yuhuzhao@quicinc.com>

asoc/codecs/wcd939x/wcd939x.c

@@ -4483,8 +4483,9 @@ static int wcd939x_suspend(struct device *dev)
 		clear_bit(ALLOW_BUCK_DISABLE, &wcd939x->status_mask);
 	}
 	if (wcd939x->dapm_bias_off ||
+		(wcd939x->component &&
 		(snd_soc_component_get_bias_level(wcd939x->component) ==
-		SND_SOC_BIAS_OFF)) {
+			SND_SOC_BIAS_OFF))) {
 		msm_cdc_set_supplies_lpm_mode(wcd939x->dev,
 					      wcd939x->supplies,
 					      pdata->regulator,