net/ixgbe: check switch domain allocation result

net/ixgbe: check switch domain allocation result

The return value of rte_eth_switch_domain_alloc() was not being checked
within ixgbe_pf_host_init() which caused a coverity issue. If the call
fails a warning is logged using PMD_INIT_LOG() and *vfinfo is free'd.
ixgbe_pf_host_init() now has a return value which is checked in
eth_ixgbe_dev_init()

Coverity issue: 362795
Fixes: cf80ba6e2038 ("net/ixgbe: add support for representor ports")
Cc: stable@dpdk.org
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>