V4L/DVB (13481): sh_mobile_ceu_camera: fix compile warning

Trivial fix for this compile warning:

v4l/sh_mobile_ceu_camera.c:1789: warning: label 'exit_free_irq' defined but not used
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/sh_mobile_ceu_camera.c

@@ -1730,7 +1730,6 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
 
 exit_free_clk:
 	pm_runtime_disable(&pdev->dev);
-exit_free_irq:
 	free_irq(pcdev->irq, pcdev);
 exit_release_mem:
 	if (platform_get_resource(pdev, IORESOURCE_MEM, 1))