i2c: fsi: Add of_put_node() before break

Each iteration of for_each_available_childe_of_node puts the previous
node, but in the case of a break from the middle of the loop, there
is no put, thus causing a memory leak. Add an of_node_put before the
break.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <[e-mail]>
Reviewed-by: Eddie James <[e-mail]>
Signed-off-by: Wolfram Sang <[e-mail]>

drivers/i2c/busses/i2c-fsi.c

···
 			continue;
 
 		port = kzalloc(sizeof(*port), GFP_KERNEL);
-		if (!port)
+		if (!port) {
+			of_node_put(np);
 			break;
+		}
 
 		port->master = i2c;
 		port->port = port_no;