firewire: Always use parens with sizeof.

Signed-off-by: Kristian Hoegsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c
index b9dce70..7aebb8a 100644
--- a/drivers/firewire/fw-topology.c
+++ b/drivers/firewire/fw-topology.c
@@ -97,7 +97,7 @@
 {
 	struct fw_node *node;
 
-	node = kzalloc(sizeof *node + port_count * sizeof node->ports[0],
+	node = kzalloc(sizeof(*node) + port_count * sizeof(node->ports[0]),
 		       GFP_ATOMIC);
 	if (node == NULL)
 		return NULL;