remove unnecessary code in ata_piix

We set sata_curr_device to 0 right after returning from init_sata(), so there's
no point in setting it to the last scanned driver at this point.
Note: there are more duplicities with cmd_sata, but those might be required,
as the code seems to reset the entire controller on every scan, ignoring the
requested port number.

Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>

drivers/block/ata_piix.c

@@ -204,9 +204,6 @@ init_sata (int dev)
 				dev_print (&sata_dev_desc[devno]);
 				/* initialize partition type */
 				init_part (&sata_dev_desc[devno]);
-				if (sata_curr_device < 0)
-					sata_curr_device =
-					    i * CONFIG_SYS_SATA_DEVS_PER_BUS + j;
 			}
 		}
 	}