If the VMDq limits is 0, a divide-by-zero error occurs.
This patch replaces throwing a floating point exception with
a normal error message.
Fixes: d19533e86f ("examples/vhost: copy old vhost example")
Cc: stable@dpdk.org
Signed-off-by: Yuan Wang <yuanx.wang@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
6f3d83c7f2