[PATCH-for-5.0 3/3] virtio-gpu: Release memory returned by virtqueue_pop() with free()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

As virtio_gpu_handle_ctrl() fills the cmdq calling virtqueue_pop(),
we need to release it with free() in virtio_gpu_reset().

virtio_gpu_handle_ctrl() allocates memory calling virtqueue_pop(),
release it in virtio_gpu_process_cmdq() with free().

virtio_gpu_process_cmdq() move commands from cmdq to fenceq, so
we also have to release them with free().

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/display/virtio-gpu-3d.c | 2 +-
 hw/display/virtio-gpu.c    | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
index 96621576c2..3a97d267e5 100644
--- a/hw/display/virtio-gpu-3d.c
+++ b/hw/display/virtio-gpu-3d.c
@@ -506,7 +506,7 @@ static void virgl_write_fence(void *opaque, uint32_t fence)
         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
         QTAILQ_REMOVE(&g->fenceq, cmd, next);
-        g_free(cmd);
+        free(cmd);
         g->inflight--;
         if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 5f0dd7c150..f5fbb722ee 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -835,7 +835,7 @@ void virtio_gpu_process_cmdq(VirtIOGPU *g)
                 fprintf(stderr, "inflight: %3d (+)\r", g->inflight);
             }
         } else {
-            g_free(cmd);
+            free(cmd);
         }
     }
 }
@@ -921,7 +921,7 @@ static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq)
         }
         virtqueue_push(vq, elem, 0);
         virtio_notify(vdev, vq);
-        g_free(elem);
+        free(elem);
     }
 }
 
@@ -1157,14 +1157,14 @@ static void virtio_gpu_reset(VirtIODevice *vdev)
     while (!QTAILQ_EMPTY(&g->cmdq)) {
         cmd = QTAILQ_FIRST(&g->cmdq);
         QTAILQ_REMOVE(&g->cmdq, cmd, next);
-        g_free(cmd);
+        free(cmd);
     }
 
     while (!QTAILQ_EMPTY(&g->fenceq)) {
         cmd = QTAILQ_FIRST(&g->fenceq);
         QTAILQ_REMOVE(&g->fenceq, cmd, next);
         g->inflight--;
-        g_free(cmd);
+        free(cmd);
     }
 
 #ifdef CONFIG_VIRGL
-- 
2.21.1