bnx2: Fix bnx2_netif_stop() merge error.

The error was introduced while merging:

commit 4529819c
bnx2: reset_task is crashing the kernel. Fixing it.

Signed-off-by: Michael Chan <mchan@broadcom.com&gt;k>
Signed-off-by: David S. Miller <davem@davemloft.net>