drm/amd/pp: Refine function iceland_start_smu

if upload firmware failed, no matter how many times
the function runs again, the same error will be encountered.
so remove the duplicated code.
Reviewed-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -234,22 +234,12 @@ static int iceland_start_smu(struct pp_hwmgr *hwmgr)
 {
 	int result;
 
-	result = iceland_smu_upload_firmware_image(hwmgr);
-	if (result)
-		return result;
-	result = iceland_smu_start_smc(hwmgr);
-	if (result)
-		return result;
-
 	if (!smu7_is_smc_ram_running(hwmgr)) {
-		pr_info("smu not running, upload firmware again \n");
 		result = iceland_smu_upload_firmware_image(hwmgr);
 		if (result)
 			return result;
 
-		result = iceland_smu_start_smc(hwmgr);
-		if (result)
-			return result;
+		iceland_smu_start_smc(hwmgr);
 	}
 
 	result = smu7_request_smu_load_fw(hwmgr);