net/enic: fix freeing memory for descriptor ring
net/enic: fix freeing memory for descriptor ring

The function vnic_dev_free_desc_ring() didn't actually free memory. Fix
this by first changing vnic_dev_alloc_desc_ring() to use the common
allocation function, then in vnic_dev_free_desc_ring call the common
free function.

Fixes: fefed3d1e62c ("enic: new driver")

Signed-off-by: Nelson Escobar <921f6477015852c9d60fa5cb7e6a106f68b238db@cisco.com>

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