Merge branch 'ipv6-fix-error-path-of-inet6_init'

Sabrina Dubroca says:

====================
ipv6: fix error path of inet6_init()

The error path of inet6_init() can trigger multiple kernel panics,
mostly due to wrong ordering of cleanups. This series fixes those
issues.
====================

Reviewed-by: Xin Long <[email protected]>
Signed-off-by: David S. Miller <[email protected]>