[media] m2m-deinterlace: remove dead code

As reported by smatch:
drivers/media/platform/m2m-deinterlace.c:1063 deinterlace_probe() info: ignoring unreachable code.

There's no need to call v4l2_m2m_release() here, as the last possible
failure in this code is to allocate the m2m struct.

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/m2m-deinterlace.c

···
 
 	return 0;
 
-	v4l2_m2m_release(pcdev->m2m_dev);
 err_m2m:
 	video_unregister_device(&pcdev->vfd);
 err_ctx: