net: uli526x: Add initialized eth_device structure

uli526x driver does not have write_hwaddr function.
However, eth stuff executes write_hwaddr function
because eth_device structure has not been initialized.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Ben Warren <biggerbadderben@gmail.com>

drivers/net/uli526x.c

@@ -225,6 +225,11 @@ int uli526x_initialize(bd_t *bis)
 		iobase &= ~0xf;
 
 		dev = (struct eth_device *)malloc(sizeof *dev);
+		if (!dev) {
+			printf("uli526x: Can not allocate memory\n");
+			break;
+		}
+		memset(dev, 0, sizeof(*dev));
 		sprintf(dev->name, "uli526x#%d", card_number);
 		db = (struct uli526x_board_info *)
 			malloc(sizeof(struct uli526x_board_info));