Move pci_vpd_release() so it's next to the other VPD functions.  This puts
it next to pci_vpd_pci22_init(), which allocates the space freed by
pci_vpd_release().
Tested-by: NShane Seymour <shane.seymour@hpe.com>
Tested-by: NBabu Moger <babu.moger@oracle.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>