simplify sdio_disable_cd() a bit

Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Philip Langdale <philipl@overt.org>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drivers/mmc/core/sdio.c

@@ -184,11 +184,7 @@ static int sdio_disable_cd(struct mmc_card *card)
 
 	ctrl |= SDIO_BUS_CD_DISABLE;
 
-	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
-	if (ret)
-		return ret;
-
-	return 0;
+	return mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
 }
 
 /*