link/sriov: fix memleak in rtnl_link_sriov_clone()
link/sriov: fix memleak in rtnl_link_sriov_clone()

Found by Coverity.

thom311/libnl,greearb/libnl-ct,thom311/libnl,thom311/libnl,greearb/libnl-ct,greearb/libnl-ct