media: synopsys: csi2rx: fix out-of-bounds check for formats array

The out-of-bounds check for the format array is off by one. Fix the
check.

Fixes: 355a110 ("media: synopsys: add driver for the designware mipi csi-2 receiver")
Cc: [email protected]
Suggested-by: Dan Carpenter <[email protected]>
Signed-off-by: Michael Riesch <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

Author: Michael Riesch

drivers/media/platform/synopsys/dw-mipi-csi2rx.c

@@ -301,7 +301,7 @@ dw_mipi_csi2rx_enum_mbus_code(struct v4l2_subdev *sd,
 
 		return 0;
 	case DW_MIPI_CSI2RX_PAD_SINK:
-		if (code->index > csi2->formats_num)
+		if (code->index >= csi2->formats_num)
 			return -EINVAL;
 
 		code->code = csi2->formats[code->index].code;