[PATCH] nvme: fix identify error status silent ignore

[Sagi Grimberg]

>> Patch 59c7c3caaaf8 intended to only silently ignore
>> non retry-able errors (DNR bit set) such that we can still
>> identify misbehaving controllers, and in the other hand
>> propagate retry-able errors (DNR bit cleared) so we don't
>> wrongly abandon a namespace just because it happens to be
>> temporarily inaccessible.
>>
>> The goal remains the same as the original commit where this
>> was introduced but unfortunately had the logic backwards.
> 
> This probably also needs to be added to the comment to explain WTF is
> going on here..

Sent v3