soc/intel/tigerlake: Avoid NULL pointer dereference

Coverity detects pointer dev as FORWARD_NULL. Add sanity check
for dev to prevent NULL pointer dereference if dev did not point
to the audio device.

BUG=CID 1420208
TEST=Built image successfully.

Change-Id: I2a62da44c7044f9dc281eae0949f7f7b612ab238
Signed-off-by: John Zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39261
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions