mm/sharepool: Fix using uninitialized sp_flag

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5DS9S
CVE: NA

-------------------------------------------------

Add the missing initialization for kc.sp_flag in
sp_make_share_kva_to_spg(). Or a random value would be used in
sp_remap_kva_to_vma().
Signed-off-by: NWang Wensheng <wangwensheng4@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mm/share_pool.c

@@ -2781,7 +2781,7 @@ static void *sp_make_share_kva_to_spg(unsigned long kva, unsigned long size,
 	}
 
 	spa->kva = kva;
-
+	kc.sp_flags = sp_flags;
 	list_for_each_entry(spg_node, &spg->procs, proc_node) {
 		mm = spg_node->master->mm;
 		kc.state = K2U_NORMAL;