cpufreq: powernow-k8: Re-order the init checks

The powernow-k8 driver will do checks at startup that the current
active driver is acpi-cpufreq and show a warning when they're not
expected.

Because of this the following warning comes up on systems that
support amd-pstate and compiled in both drivers:
`WTF driver: amd-pstate`

The systems that support powernow-k8 will not support amd-pstate,
so re-order the checks to validate the CPU model number first to
avoid this warning being displayed on modern SOCs.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: superm1

drivers/cpufreq/powernow-k8.c

@@ -1172,14 +1172,14 @@ static int powernowk8_init(void)
 	unsigned int i, supported_cpus = 0;
 	int ret;
 
+	if (!x86_match_cpu(powernow_k8_ids))
+		return -ENODEV;
+
 	if (boot_cpu_has(X86_FEATURE_HW_PSTATE)) {
 		__request_acpi_cpufreq();
 		return -ENODEV;
 	}
 
-	if (!x86_match_cpu(powernow_k8_ids))
-		return -ENODEV;
-
 	cpus_read_lock();
 	for_each_online_cpu(i) {
 		smp_call_function_single(i, check_supported_cpu, &ret, 1);