[PATCH] radeonfb: Fix spurious error return in FBIO_RADEON_SET_MIRROR

FBIO_RADEON_SET_MIRROR always returns with -EINVAL even if successful due to
an inappropriate fall-through.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/aty/radeon_base.c

@@ -913,7 +913,7 @@ static int radeonfb_ioctl (struct inode *inode, struct file *file, unsigned int
 
 			OUTREG(CRTC_EXT_CNTL, tmp);
 
-			break;
+			return 0;
 		case FBIO_RADEON_GET_MIRROR:
 			if (!rinfo->is_mobility)
 				return -EINVAL;