hv: vmbus_free_channels(): remove the redundant free_channel()
free_channel() has been invoked in vmbus_remove() -> hv_process_channel_removal(), or vmbus_remove() -> ... -> vmbus_close_internal() -> hv_process_channel_removal(). We also change to use list_for_each_entry_safe(), because the entry is removed in hv_process_channel_removal(). This patch fixes a bug in the vmbus unload path. Thank Dan Carpenter for finding the issue! Signed-off-by: NDexuan Cui <decui@microsoft.com> Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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