soc/intel/tigerlake: Avoid NULL pointer dereference

Coverity detects pointer dev as FORWARD_NULL. Add sanity check
for dev to prevent NULL pointer dereference.

BUG=CID 1353148
TEST=Built and boot up to kernel.

Change-Id: Ic0ad1ec79c950a3c17feccdde4f87f4a107fe8c0
Signed-off-by: John Zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39260
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions