soc/amd/picasso: Avoid NULL pointer dereference

Coverity detects dereferencing a pointer that might be "NULL" when
calling acpigen_write_scope. Add sanity check for scope to prevent
NULL pointer dereference.

Found-by: Coverity CID 1429980
TEST=None

Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: I6214fb83bccb19fe4edad65ce6b862815b8dcec6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42837
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions