dmaengine: idxd: off by one in cleanup code

The clean up is off by one so this will start at "i" and it should start with "i - 1" and then it doesn't unregister the zeroeth elements in the array.

Fixes c52ca478233c ("dmaengine: idxd: add configuration component of

driver") Signed-off-by: Dan Carpenter <[email protected]>

---
 drivers/dma/idxd/sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

drivers/dma/idxd/sysfs.c +2 -2

index 266423a2cabc..4dbb03c545e4 100644
@@ -434,7 +434,7 @@ int idxd_register_driver(void)
 	return 0;
 
 drv_fail:
-	for (; i > 0; i--)
+	while (--i >= 0)
 		driver_unregister(&idxd_drvs[i]->drv);
 	return rc;
 }

@@ -1840,7 +1840,7 @@ int idxd_register_bus_type(void)
 	return 0;
 
 bus_err:
-	for (; i > 0; i--)
+	while (--i >= 0)
 		bus_unregister(idxd_bus_types[i]);
 	return rc;
 }

The clean up is off by one so this will start at "i" and it should start with "i - 1" and then it doesn't unregister the zeroeth elements in the array.