net/ena: fix setting host attributes

net/ena: fix setting host attributes

The hardware may reject adding host_info in case support for
host_info is missing in the list of supported features. On the
other hand the list of supported features may contain support
for the host_info - typical bootstrap problem.

This patch solves it by removing check against support for
host_info attribute and improves error handling by reacting
only to host attribute write failure to the hardware.

Fixes: 99ecfbf845b3 ("ena: import communication layer")
Cc: stable@dpdk.org
Signed-off-by: Jakub Palider <jpa@semihalf.com>