mm/mm_init.c: move build check on MAX_ZONELISTS out of ifdef

Current check on MAX_ZONELISTS is wrapped in CONFIG_DEBUG_MEMORY_INIT,
which may not be triggered all the time.

Let's move it out to a more general place.

Link: https://lkml.kernel.org/r/20240619010612.20740-2-richard.weiyang@gmail.comSigned-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/mm_init.c

@@ -54,7 +54,6 @@ void __init mminit_verify_zonelist(void)
 		struct zonelist *zonelist;
 		int i, listid, zoneid;
 
-		BUILD_BUG_ON(MAX_ZONELISTS > 2);
 		for (i = 0; i < MAX_ZONELISTS * MAX_NR_ZONES; i++) {
 
 			/* Identify the zone and nodelist */
@@ -2657,6 +2656,7 @@ static void __init mem_init_print_info(void)
 void __init mm_core_init(void)
 {
 	/* Initializations relying on SMP setup */
+	BUILD_BUG_ON(MAX_ZONELISTS > 2);
 	build_all_zonelists(NULL);
 	page_alloc_init_cpuhp();