[IPV6]: Make xfrm6_init to return an error code.

The xfrm initialization function does not return any error code, so if
there is an error, the caller can not be advise of that.  This patch
checks the return code of the different called functions in order to
return a successful or failed initialization.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 5 deletions

diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 4d54951cea08..181cf91538f1 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -269,9 +269,9 @@ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
         .fill_dst =             xfrm6_fill_dst,
 };
 
-static void __init xfrm6_policy_init(void)
+static int __init xfrm6_policy_init(void)
 {
-        xfrm_policy_register_afinfo(&xfrm6_policy_afinfo);
+        return xfrm_policy_register_afinfo(&xfrm6_policy_afinfo);
 }
 
 static void xfrm6_policy_fini(void)
@@ -279,10 +279,22 @@ static void xfrm6_policy_fini(void)
         xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
 }
 
-void __init xfrm6_init(void)
+int __init xfrm6_init(void)
 {
-        xfrm6_policy_init();
-        xfrm6_state_init();
+        int ret;
+
+        ret = xfrm6_policy_init();
+        if (ret)
+                goto out;
+
+        ret = xfrm6_state_init();
+        if (ret)
+                goto out_policy;
+out:
+        return ret;
+out_policy:
+        xfrm6_policy_fini();
+        goto out;
 }
 
 void xfrm6_fini(void)