[PATCH 2/2] uio_hv_generic: Fix another memory leak in error handling paths

[Christophe JAILLET]

Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe
function is never freed in the error handling path.

Add the missing 'vmbus_free_ring()' call.

Note that it is already freed in the .remove function.

Fixes: cdfa835c6e5e ("uio_hv_generic: defer opening vmbus until first use")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
 drivers/uio/uio_hv_generic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c
index eebc399f2cc7..652fe2547587 100644
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -291,7 +291,7 @@ hv_uio_probe(struct hv_device *dev,
 	pdata->recv_buf = vzalloc(RECV_BUFFER_SIZE);
 	if (pdata->recv_buf == NULL) {
 		ret = -ENOMEM;
-		goto fail_close;
+		goto fail_free_ring;
 	}
 
 	ret = vmbus_establish_gpadl(channel, pdata->recv_buf,
@@ -351,6 +351,8 @@ hv_uio_probe(struct hv_device *dev,
 
 fail_close:
 	hv_uio_cleanup(dev, pdata);
+fail_free_ring:
+	vmbus_free_ring(dev->channel);
 
 	return ret;
 }
-- 
2.30.2