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 <[e-mail]>
Acked-by: Timur Tabi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/ucc_uart.c

···
 	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 */