net/iavf: fix default RSS hash configuration

net/iavf: fix default RSS hash configuration

Different device has different hash capability, it should not be
expected that all hash set would be successful to set into all
devices by default. So remove the return checking when hash default
set. And remove gtpu hash default set, iavf only enable hash for
general protocols.

Fixes: c94366cfc641 ("net/iavf: add GTPU in default hash")

Signed-off-by: Jeff Guo <jia.guo@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Wei Xie <weix.xie@intel.com>