netxen: fix firmware reset logic

If netxen_need_fw_reset() return 0 [ implies firmware is up
and running], still go through dma mask check, etc.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic_main.c

@@ -754,8 +754,10 @@ netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
 		netxen_request_firmware(adapter);
 
 	err = netxen_need_fw_reset(adapter);
-	if (err <= 0)
+	if (err < 0)
 		return err;
+	if (err == 0)
+		goto wait_init;
 
 	if (first_boot != 0x55555555) {
 		NXWR32(adapter, CRB_CMDPEG_STATE, 0);