i386/kvm/vmsr_energy: Plug memory leak on failure to connect socket vmsr_open_socket() leaks the Error set by qio_channel_socket_connect_sync(). Plug the leak by not creating the Error. Fixes: 0418f90809ae (Add support for RAPL MSRs in KVM/Qemu) Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-ID: <20250723133257.1497640-2-armbru@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com>