Drivers: hv: vmbus: Fix a bug in vmbus_open()

Fix a bug in vmbus_open() and properly propagate the error. I would
like to thank Dexuan Cui <decui@microsoft.com> for identifying the
issue.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 3788a181f176..b4eebe34ca91 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -165,8 +165,10 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
         ret = vmbus_post_msg(open_msg,
                                sizeof(struct vmbus_channel_open_channel));
 
-        if (ret != 0)
+        if (ret != 0) {
+                err = ret;
                 goto error1;
+        }
 
         t = wait_for_completion_timeout(&open_info->waitevent, 5*HZ);
         if (t == 0) {