nvmet: fix return value check in nvmet_subsys_alloc()

In case of error, the function kstrndup() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Jay Freyensee <james_p_freyensee@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Wei Yongjun 2016-07-06 12:02:09 +00:00 • committed by Jens Axboe
commit 69555af2ce