proxy: release redir.mutex on early exit from CreateOrUpdateRedirect()
proxy: release redir.mutex on early exit from CreateOrUpdateRedirect()

In CreateOrUpdateRedirect(), the redir.mutex is not release in the case
where redir.implementation.UpdateRules() fails. Although failure in that
function looks unlikely, let's release the mutex before we leave to
avoid any bad surprise.

Fixes: 5c08761d938e ("proxy: Add RedirectImplementation.UpdateRules")
Signed-off-by: Quentin Monnet <d6b8e48afb2534b213e391cab43016505747a234@isovalent.com>

tgraf/cilium,michi-covalent/cilium,tklauser/cilium,tklauser/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,cilium-team/cilium,tgraf/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium-team/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium