ethdev: fix redundant function pointer check
ethdev: fix redundant function pointer check

RTE_FUNC_PTR_OR_ERR_RET() already does the `ethdev_uninit` NULL check.

Fixes: e489007a411c ("ethdev: add generic create/destroy ethdev APIs")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>
Acked-by: Thomas Monjalon <5f50a84c1fa3bcff146405017f36aec1a10a9e38@monjalon.net>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk