net: rtnl_dump_all needs to propagate error from dumpit function
If an address, route or netconf dump request is sent for AF_UNSPEC, then
rtnl_dump_all is used to do the dump across all address families. If one
of the dumpit functions fails (e.g., invalid attributes in the dump
request) then rtnl_dump_all needs to propagate that error so the user
gets an appropriate response instead of just getting no data.
Fixes: 40683806d833 ("net: Enable kernel side filtering of route dumps") Fixes: 5bf3c21db4cb ("net/ipv4: Add support for dumping addresses for a specific device") Fixes: 8673fde0a0ab ("net/ipv6: Add support for dumping addresses for a specific device") Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>