gpio: bd70528: remove redundant assignment to variable ret

Variable ret is being initialized with a value that is never read
and ret is being re-assigned a little later on. The assignment is
redundant and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190629123306.12519-1-colin.king@canonical.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-bd70528.c

@@ -153,7 +153,7 @@ static int bd70528_gpio_get_i(struct bd70528_gpio *bdgpio, unsigned int offset)
 
 static int bd70528_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
-	int ret = -EINVAL;
+	int ret;
 	struct bd70528_gpio *bdgpio = gpiochip_get_data(chip);
 
 	/*