Fix Coverity Scan CID 60351 (Variable sctp_cnx going out of scope leaks the storage it points to.)

openair3/SCTP/sctp_eNB_task.c

@@ -800,11 +800,15 @@ static int sctp_create_new_listener(
 
     if (sctp_bindx(sd, addr, used_addresses, SCTP_BINDX_ADD_ADDR) != 0) {
         SCTP_ERROR("sctp_bindx: %s:%d\n", strerror(errno), errno);
+        free(sctp_cnx);
+        sctp_cnx = NULL;
         return -1;
     }
 
     if (listen(sd, 5) < 0) {
         SCTP_ERROR("listen: %s:%d\n", strerror(errno), errno);
+        free(sctp_cnx);
+        sctp_cnx = NULL;
         return -1;
     }
 
@@ -823,6 +827,11 @@ err:
         sd = -1;
     }
 
+    if (sctp_cnx != NULL) {
+        free(sctp_cnx);
+        sctp_cnx = NULL;
+    }
+
     return -1;
 }