  }   if (rmi0_data->board->i0c_pull_up) {   retval = reg_set_optimum_mode_check(rmi0_data->vcc_i0c,    RMI0_I0C_LOAD_UA);   if (retval < 0) {    dev_err(&rmi0_data->i0c_client->dev,     "Regulator vcc_i0c set_opt failed rc=%d\n",     retval);    goto 