hw/i386/pc: Remove 'host_type' argument from pc_init1()

All callers use host_type=TYPE_I440FX_PCI_HOST_BRIDGE.
Directly use this definition within pc_init1().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240301185936.95175-4-philmd@linaro.org>

hw/i386/pc_piix.c

@@ -101,8 +101,7 @@ static void piix_intx_routing_notifier_xen(PCIDevice *dev)
 }
 
 /* PC hardware initialisation */
-static void pc_init1(MachineState *machine,
-                     const char *host_type, const char *pci_type)
+static void pc_init1(MachineState *machine, const char *pci_type)
 {
     PCMachineState *pcms = PC_MACHINE(machine);
     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
@@ -194,7 +193,7 @@ static void pc_init1(MachineState *machine,
         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
         rom_memory = pci_memory;
 
-        phb = OBJECT(qdev_new(host_type));
+        phb = OBJECT(qdev_new(TYPE_I440FX_PCI_HOST_BRIDGE));
         object_property_add_child(OBJECT(machine), "i440fx", phb);
         object_property_set_link(phb, PCI_HOST_PROP_RAM_MEM,
                                  OBJECT(ram_memory), &error_fatal);
@@ -451,7 +450,7 @@ static void pc_compat_2_0_fn(MachineState *machine)
 #ifdef CONFIG_ISAPC
 static void pc_init_isa(MachineState *machine)
 {
-    pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
+    pc_init1(machine, TYPE_I440FX_PCI_DEVICE);
 }
 #endif
 
@@ -461,9 +460,7 @@ static void pc_xen_hvm_init_pci(MachineState *machine)
     const char *pci_type = xen_igd_gfx_pt_enabled() ?
                 TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
 
-    pc_init1(machine,
-             TYPE_I440FX_PCI_HOST_BRIDGE,
-             pci_type);
+    pc_init1(machine, pci_type);
 }
 
 static void pc_xen_hvm_init(MachineState *machine)
@@ -488,8 +485,7 @@ static void pc_xen_hvm_init(MachineState *machine)
         if (compat) { \
             compat(machine); \
         } \
-        pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, \
-                 TYPE_I440FX_PCI_DEVICE); \
+        pc_init1(machine, TYPE_I440FX_PCI_DEVICE); \
     } \
     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)