spapr/pci: Clean up local variable shadowing in spapr_phb_realize()

Rename SysBusDevice variable to avoid this warning :

  ../hw/ppc/spapr_pci.c: In function ‘spapr_phb_realize’:
  ../hw/ppc/spapr_pci.c:1872:24: warning: declaration of ‘s’ shadows a previous local [-Wshadow=local]
   1872 |         SpaprPhbState *s;
        |                        ^
  ../hw/ppc/spapr_pci.c:1829:19: note: shadowed declaration is here
   1829 |     SysBusDevice *s = SYS_BUS_DEVICE(dev);
        |                   ^

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230918145850.241074-8-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

hw/ppc/spapr_pci.c

@@ -1826,9 +1826,9 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
         (SpaprMachineState *) object_dynamic_cast(qdev_get_machine(),
                                                   TYPE_SPAPR_MACHINE);
     SpaprMachineClass *smc = spapr ? SPAPR_MACHINE_GET_CLASS(spapr) : NULL;
-    SysBusDevice *s = SYS_BUS_DEVICE(dev);
-    SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
-    PCIHostState *phb = PCI_HOST_BRIDGE(s);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(sbd);
+    PCIHostState *phb = PCI_HOST_BRIDGE(sbd);
     MachineState *ms = MACHINE(spapr);
     char *namebuf;
     int i;