Checking whether a pointer is NULL after it has been dereferenced makes zero sense. Make sure the `wifi_ssdt_write_properties()` function never gets invoked with a NULL argument for the `dev` parameter, and simplify the logic around the `is_cnvi_ddr_rfim_enabled` variable accordingly. Change-Id: I3fbc9565e7e9b4e1c14a68f6a5fd779577045236 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/63340 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>