mfd: dln2: Fix double put in dln2_probe

The dln2_free() already contains usb_put_dev(). Therefore,
the redundant usb_put_dev() before dln2_free() may lead to
a double free.

Fixes: 96da8f148396 ("mfd: dln2: Fix memory leak in dln2_probe()")
Signed-off-by: Dinghao Liu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/dln2.c

···
 	dln2_stop_rx_urbs(dln2);
 
 out_free:
-	usb_put_dev(dln2->usb_dev);
 	dln2_free(dln2);
 
 	return ret;