dm btree spine: remove paranoid node_check call in node_prep_for_write()

mainline inclusion
from mainline-v5.13-rc1
commit f73e2e70
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5JCAH
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f73e2e70ec48c9a9d45494c4866230a5059062ad

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

Remove this extra BUG_ON() that calls node_check() -- which avoids extra crc checking.
Signed-off-by: NJoe Thornber <ejt@redhat.com>
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Signed-off-by: NZhang Changzhong <zhangchangzhong@huawei.com>
Reviewed-by: NZhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: NHou Tao <houtao1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/md/persistent-data/dm-btree-spine.c

@@ -30,8 +30,6 @@ static void node_prepare_for_write(struct dm_block_validator *v,
 	h->csum = cpu_to_le32(dm_bm_checksum(&h->flags,
 					     block_size - sizeof(__le32),
 					     BTREE_CSUM_XOR));
-
-	BUG_ON(node_check(v, b, 4096));
 }
 
 static int node_check(struct dm_block_validator *v,