parport: amiga: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/parport/parport_amiga.c

···
 	if (port->irq != PARPORT_IRQ_NONE)
 		free_irq(IRQ_AMIGA_CIAA_FLG, port);
 	parport_put_port(port);
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }