[PATCH v4 3/5] vfio/pci: Disable INTx in vfio_realize error path

[Zhenzhong Duan <zhenzhong.duan@intel.com>]

When vfio realize fails, INTx isn't disabled if it has been enabled.
This may confuse host side with unhandled interrupt report.

Add a new label to be used for vfio_intx_enable() failed case.

Fixes: a9994687cb9b ("vfio/display: core & wireup")
Fixes: b290659fc3dd ("hw/vfio/display: add ramfb support")
Fixes: c62a0c7ce34e ("vfio/display: add xres + yres properties")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 hw/vfio/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index ab6645ba60af..54a8179d1c64 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3167,7 +3167,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
         kvm_irqchip_add_change_notifier(&vdev->irqchip_change_notifier);
         ret = vfio_intx_enable(vdev, errp);
         if (ret) {
-            goto out_deregister;
+            goto out_intx_disable;
         }
     }
 
@@ -3220,6 +3220,8 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
     return;
 
 out_deregister:
+    vfio_disable_interrupts(vdev);
+out_intx_disable:
     pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
     if (vdev->irqchip_change_notifier.notify) {
         kvm_irqchip_remove_change_notifier(&vdev->irqchip_change_notifier);
-- 
2.34.1