[PATCH] dmaengine: idxd: off by one in cleanup code

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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 <dan.carpenter@xxxxxxxxxx>
---
 drivers/dma/idxd/sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 266423a2cabc..4dbb03c545e4 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -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;
 }
-- 
2.29.2




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