powernow-k8: delay info messages until initialization has succeeded

powernow-k8 is quite prematurely crying Hooray and outputs diagnostic
messages, although the actual initialization can still fail.
Since now we may have acpi-cpufreq already loaded, we move the
messages at the end of the init routine to avoid confusing output
if the loading of powernow-k8 should not succeed.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

drivers/cpufreq/powernow-k8.c

@@ -1576,9 +1576,6 @@ static int __cpuinit powernowk8_init(void)
 	if (supported_cpus != num_online_cpus())
 		return -ENODEV;
 
-	printk(KERN_INFO PFX "Found %d %s (%d cpu cores) (" VERSION ")\n",
-		num_online_nodes(), boot_cpu_data.x86_model_id, supported_cpus);
-
 	if (boot_cpu_has(X86_FEATURE_CPB)) {
 
 		cpb_capable = true;
@@ -1597,16 +1594,23 @@ static int __cpuinit powernowk8_init(void)
 			struct msr *reg = per_cpu_ptr(msrs, cpu);
 			cpb_enabled |= !(!!(reg->l & BIT(25)));
 		}
-
-		printk(KERN_INFO PFX "Core Performance Boosting: %s.\n",
-			(cpb_enabled ? "on" : "off"));
 	}
 
 	rv = cpufreq_register_driver(&cpufreq_amd64_driver);
-	if (rv < 0 && boot_cpu_has(X86_FEATURE_CPB)) {
-		unregister_cpu_notifier(&cpb_nb);
-		msrs_free(msrs);
-		msrs = NULL;
+
+	if (!rv)
+		pr_info(PFX "Found %d %s (%d cpu cores) (" VERSION ")\n",
+			num_online_nodes(), boot_cpu_data.x86_model_id,
+			supported_cpus);
+
+	if (boot_cpu_has(X86_FEATURE_CPB)) {
+		if (rv < 0) {
+			unregister_cpu_notifier(&cpb_nb);
+			msrs_free(msrs);
+			msrs = NULL;
+		} else
+			pr_info(PFX "Core Performance Boosting: %s.\n",
+				(cpb_enabled ? "on" : "off"));
 	}
 	return rv;
 }