module: module_unload_init() cleanup

No need to clear mod->refptr in module_unload_init(), since
alloc_percpu() already clears allocated chunks.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (removed unused var)

kernel/module.c

@@ -526,14 +526,8 @@ EXPORT_TRACEPOINT_SYMBOL(module_get);
 /* Init the unload section of the module. */
 static void module_unload_init(struct module *mod)
 {
-	int cpu;
-
 	INIT_LIST_HEAD(&mod->source_list);
 	INIT_LIST_HEAD(&mod->target_list);
-	for_each_possible_cpu(cpu) {
-		per_cpu_ptr(mod->refptr, cpu)->incs = 0;
-		per_cpu_ptr(mod->refptr, cpu)->decs = 0;
-	}
 
 	/* Hold reference count during initialization. */
 	__this_cpu_write(mod->refptr->incs, 1);