CVE-2024-26799

In the Linux kernel, the following vulnerability has been resolved: ASoC:
qcom: Fix uninitialized pointer dmactl In the case where
__lpass_get_dmactl_handle is called and the driver id dai_id is invalid the
pointer dmactl is not being assigned a value, and dmactl contains a garbage
value since it has not been initialized and so the null check may not work.
Fix this to initialize dmactl to NULL. One could argue that modern
compilers will set this to zero, but it is useful to keep this initialized
as per the same way in functions __lpass_platform_codec_intf_init and
lpass_cdc_dma_daiops_hw_params. Cleans up clang scan build warning:
sound/soc/qcom/lpass-cdc-dma.c:275:7: warning: Branch condition evaluates
to a garbage value [core.uninitialized.Branch]