clk: bcm: rpi: Release firmware handle on unbind

Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.

Signed-off-by: Nicolas Saenz Julienne <[e-mail]>
Reviewed-by: Florian Fainelli <[e-mail]>
Acked-by: Stephen Boyd <[e-mail]>

drivers/clk/bcm/clk-raspberrypi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

drivers/clk/bcm/clk-raspberrypi.c

···
 		return -ENOENT;
 	}
 
-	firmware = rpi_firmware_get(firmware_node);
+	firmware = devm_rpi_firmware_get(&pdev->dev, firmware_node);
 	of_node_put(firmware_node);
 	if (!firmware)
 		return -EPROBE_DEFER;