Push kernel lock in6_ioctl_change_ifaddr()

[Klemens Nanni]

Purely mechanical except for the early function-local sockaddr dance,
same story as with the previous nd6_ioctl() push.

Feedback? OK?
---
 sys/netinet6/in6.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index 26f1127973e..65f4b44e700 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -245,9 +245,7 @@ in6_ioctl(u_long cmd, caddr_t data, struct ifnet *ifp, int 
privileged)
        case SIOCDIFADDR_IN6:
                if (!privileged)
                        return (EPERM);
-               KERNEL_LOCK();
                error = in6_ioctl_change_ifaddr(cmd, data, ifp);
-               KERNEL_UNLOCK();
                return (error);
        case SIOCSIFADDR:
        case SIOCSIFDSTADDR:
@@ -303,6 +301,7 @@ in6_ioctl_change_ifaddr(u_long cmd, caddr_t data, struct 
ifnet *ifp)
                        return (error);
        }
 
+       KERNEL_LOCK();
        NET_LOCK();
 
        if (sa6 != NULL) {
@@ -409,6 +408,7 @@ in6_ioctl_change_ifaddr(u_long cmd, caddr_t data, struct 
ifnet *ifp)
 
 err:
        NET_UNLOCK();
+       KERNEL_UNLOCK();
        return (error);
 }
 
-- 
2.38.1