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Subject[patch] rapidio: potential null deref in rio_setup_device()
The "goto cleanup" path can dereference "rswitch" which is NULL here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
---
This is sort of embarrassing, I've patched this function before but
missed this. Hopefully it's right now.

diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index 0914f49..882cef9 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -432,7 +432,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
/* Assign component tag to device */
if (next_comptag >= 0x10000) {
pr_err("RIO: Component Tag Counter Overflow\n");
- goto cleanup;
+ goto out_rdev;
}
rio_mport_write_config_32(port, destid, hopcount,
RIO_COMPONENT_TAG_CSR, next_comptag);
@@ -518,7 +518,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
cleanup:
if (rio_is_switch(rdev))
kfree(rswitch->route_table);
-
+out_rdev:
kfree(rdev);
return NULL;
}

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