LinuxKPI: fix build after d4a4960c655 pci: "pcim" (managed) support

Fix a last minute change from d4a4960c6559caa890af0901a21296e75b961210
based on review feedback in where a function now gets called before
it is declared which did not fully get merged back to my commit branch.

Noticed by: CI, jkim
MFC after: 10 days
X-MFC with: d4a4960c6559caa890af0901a21296e75b961210
Sponsored-by: The FreeBSD Foundation