hv: vmbus: fix vmbus_recvpacket_raw() return code
Don't return success if the buffer has not been initialized. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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