drm/amdgpu/gfx10: fix unbalanced MAP/UNMAP_QUEUES when async_gfx_ring is disabled

gfx_v10_0_kiq_enable_kgq() is called only when async_gfx_ring is
enabled, so should gfx_v10_0_kiq_disable_kgq().
Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -3540,7 +3540,7 @@ static int gfx_v10_0_hw_init(void *handle)
 }
 
 #ifndef BRING_UP_DEBUG
-static int gfx10_0_disable_kgq(struct amdgpu_device *adev)
+static int gfx_v10_0_kiq_disable_kgq(struct amdgpu_device *adev)
 {
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring, *kiq_ring = &kiq->ring;
@@ -3589,12 +3589,16 @@ static int gfx10_0_disable_kgq(struct amdgpu_device *adev)
 static int gfx_v10_0_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int r;
 
 	amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
 	amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0);
 #ifndef BRING_UP_DEBUG
-	if (gfx10_0_disable_kgq(adev))
+	if (amdgpu_async_gfx_ring) {
+		r = gfx_v10_0_kiq_disable_kgq(adev);
+		if (r)
 			DRM_ERROR("KGQ disable failed\n");
+	}
 #endif
 	if (amdgpu_gfx_disable_kcq(adev))
 		DRM_ERROR("KCQ disable failed\n");