cpufreq/amd-pstate: Show a warning when a CPU fails to setup

I came across a system that MSR_AMD_CPPC_CAP1 for some CPUs isn't
populated.  This is an unexpected behavior that is most likely a
BIOS bug. In the event it happens I'd like users to report bugs
to properly root cause and get this fixed.

Reviewed-by: Gautham R. Shenoy <[email protected]>
Reviewed-by: Dhananjay Ugwekar <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>

Author: superm1

drivers/cpufreq/amd-pstate.c

@@ -1028,6 +1028,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
 free_cpudata2:
 	freq_qos_remove_request(&cpudata->req[0]);
 free_cpudata1:
+	pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
 	kfree(cpudata);
 	return ret;
 }
@@ -1521,6 +1522,7 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
 	return 0;
 
 free_cpudata1:
+	pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
 	kfree(cpudata);
 	return ret;
 }