qemu: Remove code duplication

We already filled the PCI address structure when we checked whether it's
free or not, so let's just use the structure here instead of filling it
again.

src/qemu/qemu_conf.c

@@ -2258,9 +2258,7 @@ int qemuDomainPCIAddressSetNextAddr(qemuDomainPCIAddressSetPtr addrs,
         }
 
         dev->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
-        dev->addr.pci.domain = 0;
-        dev->addr.pci.bus = 0;
-        dev->addr.pci.slot = i;
+        dev->addr.pci = maybe.addr.pci;
 
         addrs->nextslot = i + 1;
         if (QEMU_PCI_ADDRESS_LAST_SLOT < addrs->nextslot)