via-ide: use qdev gpio rather than qemu_allocate_irqs()

This prevents the memory from qemu_allocate_irqs() from being leaked which
can in some cases be spotted by Coverity (CID 1421984).
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 20200324210519.2974-3-mark.cave-ayland@ilande.co.uk
Signed-off-by: NJohn Snow <jsnow@redhat.com>

hw/ide/via.c

@@ -160,6 +160,7 @@ static void via_ide_reset(DeviceState *dev)
 static void via_ide_realize(PCIDevice *dev, Error **errp)
 {
     PCIIDEState *d = PCI_IDE(dev);
+    DeviceState *ds = DEVICE(dev);
     uint8_t *pci_conf = dev->config;
     int i;
 
@@ -187,9 +188,10 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
     bmdma_setup_bar(d);
     pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
+    qdev_init_gpio_in(ds, via_ide_set_irq, 2);
     for (i = 0; i < 2; i++) {
-        ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2);
-        ide_init2(&d->bus[i], qemu_allocate_irq(via_ide_set_irq, d, i));
+        ide_bus_new(&d->bus[i], sizeof(d->bus[i]), ds, i, 2);
+        ide_init2(&d->bus[i], qdev_get_gpio_in(ds, i));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
         d->bmdma[i].bus = &d->bus[i];