[PATCH] virtio-crypto: clean up every data queue

realize() creates max_queues data queues and one BH for each of them.
unrealize() decides how many to tear down from multiqueue, but nothing ever
sets that field, so it only deletes the first queue and BH.

It does not matter how many queues the guest used here.  unrealize() must
undo all the allocations made by realize(), so loop over max_queues.

Fixes: 20cb2ffd5ff3 ("virtio-crypto: using bh to handle dataq's requests")
Signed-off-by: GuoHan Zhao <[email protected]>
---
 hw/virtio/virtio-crypto.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index 79e2acb56cc4..85c7279aae27 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -1114,10 +1114,9 @@ static void virtio_crypto_device_unrealize(DeviceState *dev)
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
     VirtIOCryptoQueue *q;
-    int i, max_queues;
+    int i;
 
-    max_queues = vcrypto->multiqueue ? vcrypto->max_queues : 1;
-    for (i = 0; i < max_queues; i++) {
+    for (i = 0; i < vcrypto->max_queues; i++) {
         virtio_delete_queue(vcrypto->vqs[i].dataq);
         q = &vcrypto->vqs[i];
         qemu_bh_delete(q->dataq_bh);
-- 
2.43.0