arch_topology: Check for non-negative value rather than -1 for IDs validity

Instead of just comparing the cpu topology IDs with -1 to check their
validity, improve that by checking for a valid non-negative value.

Link: https://lore.kernel.org/r/20220704101605.1318280-15-sudeep.holla@arm.comSuggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

drivers/base/arch_topology.c

@@ -642,7 +642,7 @@ static int __init parse_dt_topology(void)
 	 * only mark cores described in the DT as possible.
 	 */
 	for_each_possible_cpu(cpu)
-		if (cpu_topology[cpu].package_id == -1)
+		if (cpu_topology[cpu].package_id < 0)
 			ret = -EINVAL;
 
 out_map:
@@ -714,7 +714,7 @@ void update_siblings_masks(unsigned int cpuid)
 		if (cpuid_topo->cluster_id != cpu_topo->cluster_id)
 			continue;
 
-		if (cpuid_topo->cluster_id != -1) {
+		if (cpuid_topo->cluster_id >= 0) {
 			cpumask_set_cpu(cpu, &cpuid_topo->cluster_sibling);
 			cpumask_set_cpu(cpuid, &cpu_topo->cluster_sibling);
 		}