drm/amd/powerplay: fix static checker warning in process_pptables_v1_0.c

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c

@@ -1201,12 +1201,15 @@ static uint32_t make_classification_flags(struct pp_hwmgr *hwmgr,
 static int ppt_get_num_of_vce_state_table_entries_v1_0(struct pp_hwmgr *hwmgr)
 {
 	const ATOM_Tonga_POWERPLAYTABLE *pp_table = get_powerplay_table(hwmgr);
-	const ATOM_Tonga_VCE_State_Table *vce_state_table =
-				(ATOM_Tonga_VCE_State_Table *)(((unsigned long)pp_table) + le16_to_cpu(pp_table->usVCEStateTableOffset));
+	const ATOM_Tonga_VCE_State_Table *vce_state_table;
 
-	if (vce_state_table == NULL)
+
+	if (pp_table == NULL)
 		return 0;
 
+	vce_state_table = (void *)pp_table +
+			le16_to_cpu(pp_table->usVCEStateTableOffset);
+
 	return vce_state_table->ucNumEntries;
 }