hw/i386/pc: Move gsi_state creation code

The code block related to IRQ starts few lines later. Move
the comment and the pc_gsi_create() invocation where we start
to use the IRQs.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018135910.24286-4-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/i386/pc_q35.c

@@ -211,9 +211,6 @@ static void pc_q35_init(MachineState *machine)
                        rom_memory, &ram_memory);
     }
 
-    /* irq lines */
-    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
-
     /* create pci host bus */
     q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE));
 
@@ -247,6 +244,9 @@ static void pc_q35_init(MachineState *machine)
     object_property_set_link(OBJECT(machine), OBJECT(lpc),
                              PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
 
+    /* irq lines */
+    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
+
     ich9_lpc = ICH9_LPC_DEVICE(lpc);
     lpc_dev = DEVICE(lpc);
     for (i = 0; i < GSI_NUM_PINS; i++) {