ASoC: qcom: qdsp6: Use IS_ERR() instead of IS_ERR_OR_NULL()

In the function q6adm_open(), q6adm_alloc_copp() doesn't return
NULL. Thus use IS_ERR() to validate the returned value instead
of IS_ERR_OR_NULL(). And delete the extra line.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20200714112744.20560-1-tangbin@cmss.chinamobile.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/qdsp6/q6adm.c

@@ -403,7 +403,7 @@ struct q6copp *q6adm_open(struct device *dev, int port_id, int path, int rate,
 
 	spin_lock_irqsave(&adm->copps_list_lock, flags);
 	copp = q6adm_alloc_copp(adm, port_id);
-	if (IS_ERR_OR_NULL(copp)) {
+	if (IS_ERR(copp)) {
 		spin_unlock_irqrestore(&adm->copps_list_lock, flags);
 		return ERR_CAST(copp);
 	}
@@ -419,7 +419,6 @@ struct q6copp *q6adm_open(struct device *dev, int port_id, int path, int rate,
 	copp->bit_width = bit_width;
 	copp->app_type = app_type;
 
-
 	ret = q6adm_device_open(adm, copp, port_id, path, topology,
 				channel_mode, bit_width, rate);
 	if (ret < 0) {