cpufreq: ia64: Fix a memory leak in acpi_cpufreq_cpu_exit()

freq_table should be alloced in ->init and freed in ->exit, but it
it is not freed.  Fix this memory leak in acpi_cpufreq_cpu_exit().
Signed-off-by: NPan Xinhui <xinhuix.pan@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/ia64-acpi-cpufreq.c

@@ -333,6 +333,7 @@ acpi_cpufreq_cpu_exit (
 	if (data) {
 		acpi_io_data[policy->cpu] = NULL;
 		acpi_processor_unregister_performance(policy->cpu);
+		kfree(policy->freq_table);
 		kfree(data);
 	}