usb: gadget: at91_udc: add missing clk_put on fclk and iclk

This patch adds missing clk_put on fclk and iclk in case the probe function
fails after these clocks have been retrieved.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/at91_udc.c

@@ -1851,6 +1851,10 @@ fail3:
 fail2:
 	free_irq(udc->udp_irq, udc);
 fail1:
+	if (!IS_ERR(udc->fclk))
+		clk_put(udc->fclk);
+	if (!IS_ERR(udc->iclk))
+		clk_put(udc->iclk);
 	iounmap(udc->udp_baseaddr);
 fail0a:
 	if (cpu_is_at91rm9200())