[PATCH] Fix reference of uninitialised memory in ata_device_add()

ata_device_add fails, calls ata_host_remove with pointers to unitialized
memory.

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/libata-core.c

@@ -5478,11 +5478,10 @@ int ata_device_add(const struct ata_probe_ent *ent)
 		int irq_line = ent->irq;
 
 		ap = ata_port_add(ent, host, i);
+		host->ports[i] = ap;
 		if (!ap)
 			goto err_out;
 
-		host->ports[i] = ap;
-
 		/* dummy? */
 		if (ent->dummy_port_mask & (1 << i)) {
 			ata_port_printk(ap, KERN_INFO, "DUMMY\n");