ACPI: processor: Drop duplicate setting of shared_cpu_map

'shared_cpu_map', stored as part of the per-processor
acpi_processor_performance structre, is used to store CPUs that share
a performance domain. By definition it contains the owning CPU.

While building the 'shared_cpu_map' it is being set twice - once while
initialising the performance domains and again when matching CPUs
belonging to the same domain.

Drop the unnecessary initialisation.
Signed-off-by: Punit Agrawal <punitagrawal@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/processor_perflib.c

@@ -616,7 +616,6 @@ int acpi_processor_preregister_performance(
 			continue;
 
 		pr->performance = per_cpu_ptr(performance, i);
-		cpumask_set_cpu(i, pr->performance->shared_cpu_map);
 		pdomain = &(pr->performance->domain_info);
 		if (acpi_processor_get_psd(pr->handle, pdomain)) {
 			retval = -EINVAL;