exfat: avoid incorrectly releasing for root inode

stable inclusion
from stable-v5.10.109
commit 9eeaa2d7d58ae7fe66bdb016a03fe251c48fe222
bugzilla: https://gitee.com/openeuler/kernel/issues/I574AE

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9eeaa2d7d58ae7fe66bdb016a03fe251c48fe222

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

commit 839a534f upstream.

In d_make_root, when we fail to allocate dentry for root inode,
we will iput root inode and returned value is NULL in this function.

So we do not need to release this inode again at d_make_root's caller.
Signed-off-by: NChen Li <chenli@uniontech.com>
Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com>
Cc: Tadeusz Struk <tadeusz.struk@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

fs/exfat/super.c

@@ -690,7 +690,7 @@ static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)
 	if (!sb->s_root) {
 		exfat_err(sb, "failed to get the root dentry");
 		err = -ENOMEM;
-		goto put_inode;
+		goto free_table;
 	}
 
 	return 0;