[DLM] Fix memory leak in dlm_add_member() when dlm_node_weight() retu…

…rns less than zero

There's a memory leak in fs/dlm/member.c::dlm_add_member().

If "dlm_node_weight(ls->ls_name, nodeid)" returns < 0, then
we'll return without freeing the memory allocated to the (at
that point yet unused) 'memb'.
This patch frees the allocated memory in that case and thus
avoids the leak.

Signed-off-by: Jesper Juhl <[email protected]>
Signed-off-by: David Teigland <[email protected]>
Signed-off-by: Steven Whitehouse <[email protected]>

fs/dlm/member.c

@@ -56,8 +56,10 @@ static int dlm_add_member(struct dlm_ls *ls, int nodeid)
 		return -ENOMEM;
 
 	w = dlm_node_weight(ls->ls_name, nodeid);
-	if (w < 0)
+	if (w < 0) {
+		kfree(memb);
 		return w;
+	}
 
 	memb->nodeid = nodeid;
 	memb->weight = w;