cpupower: cpupower info -b should return 0 on success, not the perf bias value

		if (params.perf_bias) {

			ret = msr_intel_get_perf_bias(cpu);

			if (ret < 0) {

				printf(_("Could not read perf-bias value\n"));

				break;

				fprintf(stderr,

			_("Could not read perf-bias value[%d]\n"), ret);

				exit(EXIT_FAILURE);

			} else

				printf(_("perf-bias: %d\n"), ret);

		}

	}

	return ret;

	return 0;

}