DM9000 initialization fix

DM9000 driver returns success even if it is failed to detect the chip.
Below patch fixes it.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
 drivers/net/dm9000.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>