[PULL 45/53] vdpa: fix not using CVQ buffer in case of error

[Michael S. Tsirkin]

From: Eugenio Pérez <epere...@redhat.com>

Bug introducing when refactoring.  Otherway, the guest never received
the used buffer.

Fixes: be4278b65fc1 ("vdpa: extract vhost_vdpa_net_cvq_add from 
vhost_vdpa_net_handle_ctrl_avail")
Signed-off-by: Eugenio Pérez <epere...@redhat.com>
Message-Id: <20230602173451.1917999-1-epere...@redhat.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
Acked-by: Jason Wang <jasow...@redhat.com>
Tested-by: Lei Yang <leiy...@redhat.com>
---
 net/vhost-vdpa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 75352efa39..9e92b3558c 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -794,7 +794,7 @@ static int 
vhost_vdpa_net_handle_ctrl_avail(VhostShadowVirtqueue *svq,
     }
 
     if (*s->status != VIRTIO_NET_OK) {
-        return VIRTIO_NET_ERR;
+        goto out;
     }
 
     status = VIRTIO_NET_ERR;
-- 
MST