af-packet: fix IPS mode

There was an inversion in code resulting as all sockets being seen
as non IPS mode when doing the peering. This resulted in a crash at
first packet because it has no peer.

src/source-af-packet.c

@@ -1512,18 +1512,18 @@ TmEcode ReceiveAFPThreadInit(ThreadVars *tv, void *initdata, void **data) {
         SCLogInfo("Enabling zero copy mode by using data release call");
     }
 
-    if (AFPPeersListAdd(ptv) == TM_ECODE_FAILED) {
-        SCFree(ptv);
-        afpconfig->DerefFunc(afpconfig);
-        SCReturnInt(TM_ECODE_FAILED);
-    }
-
     ptv->copy_mode = afpconfig->copy_mode;
     if (ptv->copy_mode != AFP_COPY_MODE_NONE) {
         strlcpy(ptv->out_iface, afpconfig->out_iface, AFP_IFACE_NAME_LENGTH);
         ptv->out_iface[AFP_IFACE_NAME_LENGTH - 1]= '\0';
     }
 
+    if (AFPPeersListAdd(ptv) == TM_ECODE_FAILED) {
+        SCFree(ptv);
+        afpconfig->DerefFunc(afpconfig);
+        SCReturnInt(TM_ECODE_FAILED);
+    }
+
 #define T_DATA_SIZE 70000
     ptv->data = SCMalloc(T_DATA_SIZE);
     if (ptv->data == NULL) {