[PATCH] ASoC: qcom: Add checks for devm_kcalloc

[Yuan Can]

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

Fixes: 24caf8d9eb10 ("ASoC: qcom: lpass-sc7180: Add platform driver for lpass audio")
Signed-off-by: Yuan Can <yuancan at huawei.com>
---
 sound/soc/qcom/lpass-sc7180.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
index 77a556b27cf0..24a1c121cb2e 100644
--- a/sound/soc/qcom/lpass-sc7180.c
+++ b/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++)
-- 
2.17.1