pci: Report fatal errors with error_report(), not error_printf()

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <20190417190641.26814-6-armbru@redhat.com>

hw/pci/pci.c

@@ -951,7 +951,7 @@ static uint16_t pci_req_id_cache_extract(PCIReqIDCache *cache)
         result = PCI_BUILD_BDF(bus_n, 0);
         break;
     default:
-        error_printf("Invalid PCI requester ID cache type: %d\n",
+        error_report("Invalid PCI requester ID cache type: %d",
                      cache->type);
         exit(1);
         break;