V4L/DVB: video: testing unsigned for less than 0

soc_mbus_bytes_per_line() returns -EINVAL on error but we store it in an
unsigned int so the test for less than zero doesn't work. I think it
always returns "small" positive values so we can just cast it to int
here.

Signed-off-by: Dan Carpenter <[e-mail]>
Signed-off-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/sh_mobile_ceu_camera.c

···
 	height = pix->height;
 
 	pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt);
-	if (pix->bytesperline < 0)
+	if ((int)pix->bytesperline < 0)
 		return pix->bytesperline;
 	pix->sizeimage = height * pix->bytesperline;