drm/amdgpu: remove partition attributes sys file for gfx_v9_4_3

For driver de-init like rmmod operations those partition specific
attributes need to be removed accordingly.

Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com>
Reviewed-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -895,6 +895,7 @@ static int gfx_v9_4_3_sw_fini(void *handle)
 	gfx_v9_4_3_mec_fini(adev);
 	amdgpu_bo_unref(&adev->gfx.rlc.clear_state_obj);
 	gfx_v9_4_3_free_microcode(adev);
+	amdgpu_gfx_sysfs_fini(adev);
 
 	return 0;
 }