sctp: Fix use of uninitialized pointer

Introduced by c4492586 (sctp: Add address type check while process
paramaters of ASCONF chunk):

net/sctp/sm_make_chunk.c: In function 'sctp_process_asconf':
net/sctp/sm_make_chunk.c:2828: warning: 'addr_param' may be used uninitialized in this function
net/sctp/sm_make_chunk.c:2828: note: 'addr_param' was declared here

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 6eeee535e94e..bbc7107c86cf 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2827,6 +2827,9 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
         union sctp_addr addr;
         union sctp_addr_param *addr_param;
 
+        addr_param = (union sctp_addr_param *)
+                        ((void *)asconf_param + sizeof(sctp_addip_param_t));
+
         switch (addr_param->v4.param_hdr.type) {
         case SCTP_PARAM_IPV6_ADDRESS:
                 if (!asoc->peer.ipv6_address)
@@ -2840,9 +2843,6 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
                 return SCTP_ERROR_INV_PARAM;
         }
 
-        addr_param = (union sctp_addr_param *)
-                        ((void *)asconf_param + sizeof(sctp_addip_param_t));
-
         af = sctp_get_af_specific(param_type2af(addr_param->v4.param_hdr.type));
         if (unlikely(!af))
                 return SCTP_ERROR_INV_PARAM;