vfio/pci: Allow MSI-X relocation to fixup bogus PBA

The MSI-X relocation code can sometimes be used to work around bogus
MSI-X capabilities, but this test for whether the PBA is outside of
the specified BAR causes the device to error before we can apply a
relocation.  Let it proceed if we intend to relocate MSI-X anyway.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

hw/vfio/pci.c

@@ -1533,7 +1533,7 @@ static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp)
         if (vdev->vendor_id == PCI_VENDOR_ID_CHELSIO &&
             (vdev->device_id & 0xff00) == 0x5800) {
             msix->pba_offset = 0x1000;
-        } else {
+        } else if (vdev->msix_relo == OFF_AUTOPCIBAR_OFF) {
             error_setg(errp, "hardware reports invalid configuration, "
                        "MSIX PBA outside of specified BAR");
             g_free(msix);