drm/amdgpu: Fix hive reference count leak

both get_xgmi_hive and put_xgmi_hive can be skipped since the
reset domain is not necessary for VF

Signed-off-by: Vignesh Chander <Vignesh.Chander@amd.com>
Reviewed-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>