ASoC: qcom: Add checks for devm_kcalloc

As the devm_kcalloc may return NULL, the return value needs to be checked
to avoid NULL poineter dereference.

Fixes: 24caf8d9 ("ASoC: qcom: lpass-sc7180: Add platform driver for lpass audio")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221124140510.63468-1-yuancan@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/lpass-sc7180.c

@@ -131,6 +131,9 @@ static int sc7180_lpass_init(struct platform_device *pdev)
 
 	drvdata->clks = devm_kcalloc(dev, variant->num_clks,
 				     sizeof(*drvdata->clks), GFP_KERNEL);
+	if (!drvdata->clks)
+		return -ENOMEM;
+
 	drvdata->num_clks = variant->num_clks;
 
 	for (i = 0; i < drvdata->num_clks; i++)