Even though GL GPU doesn't support hotplugging today, free virgl
resources when GL device is unrealized. For consistency.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 hw/display/virtio-gpu-gl.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
index 21a1e9a05c5d..0109244276fc 100644
--- a/hw/display/virtio-gpu-gl.c
+++ b/hw/display/virtio-gpu-gl.c
@@ -150,6 +150,22 @@ static Property virtio_gpu_gl_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void virtio_gpu_gl_device_unrealize(DeviceState *qdev)
+{
+    VirtIOGPU *g = VIRTIO_GPU(qdev);
+    VirtIOGPUGL *gl = VIRTIO_GPU_GL(qdev);
+
+    if (gl->renderer_state >= RS_INITED) {
+        if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
+            timer_free(gl->print_stats);
+        }
+        timer_free(gl->fence_poll);
+        virgl_renderer_cleanup(NULL);
+    }
+
+    gl->renderer_state = RS_START;
+}
+
 static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -163,6 +179,7 @@ static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
     vgc->update_cursor_data = virtio_gpu_gl_update_cursor_data;
 
     vdc->realize = virtio_gpu_gl_device_realize;
+    vdc->unrealize = virtio_gpu_gl_device_unrealize;
     vdc->reset = virtio_gpu_gl_reset;
     device_class_set_props(dc, virtio_gpu_gl_properties);
 }
-- 
2.44.0