Use a proper return code rather than -1.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
                if (soc15_baco_program_registers(hwmgr, pre_baco_tbl,
                                             ARRAY_SIZE(pre_baco_tbl))) {
                        if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_EnterBaco))
-                               return -1;
+                               return -EINVAL;
 
                        if (soc15_baco_program_registers(hwmgr, enter_baco_tbl,
                                                   ARRAY_SIZE(enter_baco_tbl)))
                }
        }
 
-       return -1;
+       return -EINVAL;
 }
 
 
 
                if(smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_EnterBaco, 0))
-                       return -1;
+                       return -EINVAL;
 
        } else if (state == BACO_STATE_OUT) {
                if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ExitBaco))
-                       return -1;
+                       return -EINVAL;
                if (!soc15_baco_program_registers(hwmgr, clean_baco_tbl,
                                                     ARRAY_SIZE(clean_baco_tbl)))
-                       return -1;
+                       return -EINVAL;
        }
 
        return 0;