[openib-general] mad: Validate *bad_send_wr in ib_post_send_mad()

[Hal Rosenstock]

mad: Validate *bad_send_wr in ib_post_send_mad()
Fix previous patch

Index: mad.c
===================================================================
--- mad.c	(revision 1110)
+++ mad.c	(working copy)
@@ -369,16 +369,15 @@
 	struct ib_mad_port_private	*port_priv;
 
 	/* Validate supplied parameters */
-	if (!mad_agent || !send_wr || !*bad_send_wr) {
-		*bad_send_wr = send_wr;
-		return -EINVAL;
-	}
+	if (!*bad_send_wr)
+		goto error1;
 
+	if (!mad_agent || !send_wr )
+		goto error2;
+
 	if (!mad_agent->send_handler ||
-	    (send_wr->wr.ud.timeout_ms && !mad_agent->recv_handler)) {
-		*bad_send_wr = send_wr;
-		return -EINVAL;
-	}
+	    (send_wr->wr.ud.timeout_ms && !mad_agent->recv_handler))
+		goto error2;
 
 	mad_agent_priv = container_of(mad_agent, struct ib_mad_agent_private,
 				      agent);
@@ -439,6 +438,11 @@
 	}
 
 	return 0;	
+
+error2:
+	*bad_send_wr = send_wr;
+error1:
+	return -EINVAL;
 }
 EXPORT_SYMBOL(ib_post_send_mad);