gpiolib: fix request related issue

Fix request-already-requested handling in gpio_request().

Signed-off-by: Magnus Damm <[e-mail]>
Acked-by: David Brownell <[e-mail]>
Cc: <[e-mail]> [2.6.28.x]
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/gpio/gpiolib.c

···
 	} else {
 		status = -EBUSY;
 		module_put(chip->owner);
+		goto done;
 	}
 
 	if (chip->request) {