[POWERPC] ps3: Fix no storage devices found

Fix probing of PS3 storage devices: in the success case, we should set
`error' to zero, not `result'.

Without this patch no storage devices are found.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c
index e23a5a8..ce15cad 100644
--- a/arch/powerpc/platforms/ps3/device-init.c
+++ b/arch/powerpc/platforms/ps3/device-init.c
@@ -372,7 +372,7 @@
 		    notify_event->dev_type == repo->dev_type) {
 			pr_debug("%s:%u: device ready: dev_id %u\n", __func__,
 				 __LINE__, repo->dev_id);
-			result = 0;
+			error = 0;
 			break;
 		}