cpufreq: amd-pstate: simplify cpudata pointer assignment

move the cpudata assignment to cpudata declaration which
will simplify the functions.

No functional change intended.
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/amd-pstate.c

@@ -555,9 +555,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
 
 static int amd_pstate_cpu_exit(struct cpufreq_policy *policy)
 {
-	struct amd_cpudata *cpudata;
-
-	cpudata = policy->driver_data;
+	struct amd_cpudata *cpudata = policy->driver_data;
 
 	freq_qos_remove_request(&cpudata->req[1]);
 	freq_qos_remove_request(&cpudata->req[0]);
@@ -599,9 +597,7 @@ static ssize_t show_amd_pstate_max_freq(struct cpufreq_policy *policy,
 					char *buf)
 {
 	int max_freq;
-	struct amd_cpudata *cpudata;
-
-	cpudata = policy->driver_data;
+	struct amd_cpudata *cpudata = policy->driver_data;
 
 	max_freq = amd_get_max_freq(cpudata);
 	if (max_freq < 0)
@@ -614,9 +610,7 @@ static ssize_t show_amd_pstate_lowest_nonlinear_freq(struct cpufreq_policy *poli
 						     char *buf)
 {
 	int freq;
-	struct amd_cpudata *cpudata;
-
-	cpudata = policy->driver_data;
+	struct amd_cpudata *cpudata = policy->driver_data;
 
 	freq = amd_get_lowest_nonlinear_freq(cpudata);
 	if (freq < 0)