Ming Lei 35b489d32f block: fix checking return value of blk_mq_init_queue
Check IS_ERR_OR_NULL(return value) instead of just return value.

Signed-off-by: Ming Lei <ming.lei@canonical.com>

Reduced to IS_ERR() by me, we never return NULL.
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-01-02 10:32:02 -07:00
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