proxy->vector_irqfd did not free when kvm_virtio_pci_vector_use or
msix_set_vector_notifiers failed in virtio_pci_set_guest_notifiers.

Fixes: 7d37d351

Signed-off-by: Lei Xiang <leixiang@kylinos.cn>
Tested-by: Zeng Chi <zengchi@kylinos.cn>
Suggested-by: Xie Ming <xieming@kylinos.cn>
---
 hw/virtio/virtio-pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index a50c5a57d7..5339be4e01 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1063,6 +1063,8 @@ assign_error:
     while (--n >= 0) {
         virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd);
     }
+    g_free(proxy->vector_irqfd);
+    proxy->vector_irqfd = NULL;
     return r;
 }
 
-- 
2.25.1