can: mscan: mpc5xxx_can: mpc5xxx_can_probe(): remove useless BUG_ON()

In the function mpc5xxx_can_probe(), the variable 'data' has already
been determined in the above code, so the BUG_ON() in this place is
useless, remove it.

Link: https://lore.kernel.org/r/20210823141033.17876-1-tangbin@cmss.chinamobile.comSigned-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/mscan/mpc5xxx_can.c

@@ -317,7 +317,6 @@ static int mpc5xxx_can_probe(struct platform_device *ofdev)
 
 	clock_name = of_get_property(np, "fsl,mscan-clock-source", NULL);
 
-	BUG_ON(!data);
 	priv->type = data->type;
 	priv->can.clock.freq = data->get_clock(ofdev, clock_name,
 					       &mscan_clksrc);