cpupower: Fix bug where return value was not used

Save return value from amd_pci_get_num_boost_states
and remove redundant setting of *support

Signed-off-by: Sherry Hurwitz <sherry.hurwitz@amd.com>
Reviewed-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

tools/power/cpupower/utils/helpers/misc.c

@@ -16,10 +16,9 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
 
 	if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CBP) {
 		*support = 1;
-		amd_pci_get_num_boost_states(active, states);
-		if (ret <= 0)
+		ret = amd_pci_get_num_boost_states(active, states);
+		if (ret)
 			return ret;
-		*support = 1;
 	} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA)
 		*support = *active = 1;
 	return 0;