drm/amd/powerplay: remove redundant assignment to variables HiSidd and LoSidd

The variables HiSidd and LoSidd are being initialized with values that
are never read and are being updated a little later with a new value.
The initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c

@@ -653,8 +653,8 @@ static int ci_min_max_v_gnbl_pm_lid_from_bapm_vddc(struct pp_hwmgr *hwmgr)
 static int ci_populate_bapm_vddc_base_leakage_sidd(struct pp_hwmgr *hwmgr)
 {
 	struct ci_smumgr *smu_data = (struct ci_smumgr *)(hwmgr->smu_backend);
-	uint16_t HiSidd = smu_data->power_tune_table.BapmVddCBaseLeakageHiSidd;
+	uint16_t HiSidd;
-	uint16_t LoSidd = smu_data->power_tune_table.BapmVddCBaseLeakageLoSidd;
+	uint16_t LoSidd;
 	struct phm_cac_tdp_table *cac_table = hwmgr->dyn_state.cac_dtp_table;
 
 	HiSidd = (uint16_t)(cac_table->usHighCACLeakage / 100 * 256);