Merge "diag: Fix possible double free issue"

/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

	len = entry->len;

	kfree(entry);

	diag_ws_on_copy_complete(DIAG_WS_MUX);

	spin_unlock_irqrestore(&ch->write_lock, flags);

	if (ch->ops && ch->ops->write_done)

		ch->ops->write_done(buf, len, ctxt, DIAG_USB_MODE);

	buf = NULL;

	len = 0;

	ctxt = 0;

	spin_unlock_irqrestore(&ch->write_lock, flags);

	diagmem_free(driver, req, ch->mempool);

}