serial: ucc_uart: remove redundant assignment to pointer bdp

The variable bdp is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Timur Tabi <timur@kernel.org>
Link: https://lore.kernel.org/r/20191220001000.39859-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/ucc_uart.c

@@ -332,8 +332,6 @@ static int qe_uart_tx_pump(struct uart_qe_port *qe_port)
 	struct uart_port *port = &qe_port->port;
 	struct circ_buf *xmit = &port->state->xmit;
 
-	bdp = qe_port->rx_cur;
-
 	/* Handle xon/xoff */
 	if (port->x_char) {
 		/* Pick next descriptor and fill from buffer */