net/i40e: do not use VSI before NULL check
net/i40e: do not use VSI before NULL check

Coverity issue: 127556
Fixes: 440499cf5376 ("net/i40e: support floating VEB")

Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>
Acked-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>

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