ANDROID: modules: fix lockprove warning

Need to disable preemption before using rcu_dereference_sched().

Bug: 157383682
Change-Id: I5f7c0a222bac35c5fa58cdd9f4cf71cb422a01cd
Signed-off-by: Neal Liu <neal.liu@mediatek.com>
diff --git a/kernel/module.c b/kernel/module.c
index a43d6a3..17b9c73 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -4148,8 +4148,10 @@
 static void cfi_init(struct module *mod)
 {
 #ifdef CONFIG_CFI_CLANG
+	preempt_disable();
 	mod->cfi_check =
 		(cfi_check_fn)mod_find_symname(mod, CFI_CHECK_FN_NAME);
+	preempt_enable();
 	cfi_module_add(mod, module_addr_min, module_addr_max);
 #endif
 }