[libata-dev #upstream-fixes] pata_legacy: don't call ata_host_detach()after initialization failure

[Tejun Heo]

ata_host_detach() detaches an attached port and shouldn't be called on
a port which hasn't been attached yet.  pata_legacy incorrectly calls
ata_host_detach() on unattached port after initialization failure
causing oops.  Fix it.

Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
---
 drivers/ata/pata_legacy.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 333dc15..7383f19 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -1278,8 +1278,6 @@ static __init int legacy_init_one(struct legacy_probe *probe)
 		}
 	}
 fail:
-	if (host)
-		ata_host_detach(host);
 	platform_device_unregister(pdev);
 	return ret;
 }
--
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