[NETNS][IPV6]: Make ipv6_sysctl_register to return a value.

This patch makes the function ipv6_sysctl_register to return a
value. The af_inet6 init function is now able to handle an error and
catch it from the initialization of the sysctl.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 34c20533ba5d..a2842400a09e 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -783,7 +783,9 @@ static int __init inet6_init(void)
          */
 
 #ifdef CONFIG_SYSCTL
-        ipv6_sysctl_register();
+        err = ipv6_sysctl_register();
+        if (err)
+                goto sysctl_fail;
 #endif
         err = icmpv6_init(&inet6_family_ops);
         if (err)
@@ -897,6 +899,7 @@ ndisc_fail:
 icmp_fail:
 #ifdef CONFIG_SYSCTL
         ipv6_sysctl_unregister();
+sysctl_fail:
 #endif
         cleanup_ipv6_mibs();
 out_unregister_sock: