net: ena: fix auto casting to boolean

Eliminate potential auto casting compilation error.

Fixes: 1738cd3ed3 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arthur Kiyanovski 2018-10-09 11:21:30 +03:00 • committed by David S. Miller
commit 248ab77342