hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I78RUK
CVE: NA

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Currently nv_init() doesn't handle errors, null-ptr-dereference will be
triggered if errors occur.
Signed-off-by: NYu Kuai <yukuai3@huawei.com>
Reviewed-by: NHou Tao <houtao1@huawei.com>
Signed-off-by: NJialin Zhang <zhangjialin11@huawei.com>