ASoC: qcom: Fix NULL Dereference in asoc_qcom_lpass_cpu_platform_probe()

In the Linux kernel, the following vulnerability has been resolved:

ASoC: qcom: Fix NULL Dereference in asoc_qcom_lpass_cpu_platform_probe()

A devm_kzalloc() in asoc_qcom_lpass_cpu_platform_probe() could

possibly return NULL pointer. NULL Pointer Dereference may be

triggerred without addtional check.

Add a NULL check for the returned pointer.