net/bnxt: propagate FW command failure to application

net/bnxt: propagate FW command failure to application

In bnxt_reta_update_op() and bnxt_rss_hash_update_op(), driver does not
propagate the error back to the application when the fw command fails.

Fixes: 378ab645bb0b ("net/bnxt: fix RSS RETA indirection table ops")
Fixes: fcc0aa1edc10 ("net/bnxt: add RSS hash configuration")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>