x86 / ACPI / NUMA: cleanup acpi_numa_processor_affinity_init()

Cleanup acpi_numa_processor_affinity_init() in preparation for its
move to drivers/acpi/numa.c. It will be reused by arm64, this has no
functional change.

Signed-off-by: Hanjun Guo <[e-mail]>
Signed-off-by: Robert Richter <[e-mail]>
Signed-off-by: David Daney <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

arch/x86/mm/srat.c

···
 
 int acpi_numa __initdata;
 
-static __init int setup_node(int pxm)
-{
-	return acpi_map_pxm_to_node(pxm);
-}
-
 static __init void bad_srat(void)
 {
 	printk(KERN_ERR "SRAT: SRAT not used.\n");
···
 			 pxm, apic_id);
 		return;
 	}
-	node = setup_node(pxm);
+	node = acpi_map_pxm_to_node(pxm);
 	if (node < 0) {
 		printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
 		bad_srat();
···
 	pxm = pa->proximity_domain_lo;
 	if (acpi_srat_revision >= 2)
 		pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8;
-	node = setup_node(pxm);
+	node = acpi_map_pxm_to_node(pxm);
 	if (node < 0) {
 		printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
 		bad_srat();
···
 	       pxm, apic_id, node);
 }
 
-#ifdef CONFIG_MEMORY_HOTPLUG
-static inline int save_add_info(void) {return 1;}
-#else
-static inline int save_add_info(void) {return 0;}
-#endif
-
 /* Callback for parsing of the Proximity Domain <-> Memory Area mappings */
 int __init
 acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
···
 	if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0)
 		goto out_err;
 	hotpluggable = ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE;
-	if (hotpluggable && !save_add_info())
+	if (hotpluggable && !IS_ENABLED(CONFIG_MEMORY_HOTPLUG))
 		goto out_err;
 
 	start = ma->base_address;
···
 	if (acpi_srat_revision <= 1)
 		pxm &= 0xff;
 
-	node = setup_node(pxm);
+	node = acpi_map_pxm_to_node(pxm);
 	if (node < 0) {
 		printk(KERN_ERR "SRAT: Too many proximity domains.\n");
 		goto out_err_bad_srat;
···
 out_err_bad_srat:
 	bad_srat();
 out_err:
-	return -1;
+	return -EINVAL;
 }
 
 int __init x86_acpi_numa_init(void)