sdio: kmalloc + memset conversion to kzalloc

Signed-off-by: Mariusz Kozlowski <[e-mail]>
Signed-off-by: Pierre Ossman <[e-mail]>

drivers/mmc/core/sdio_bus.c

···
 {
 	struct sdio_func *func;
 
-	func = kmalloc(sizeof(struct sdio_func), GFP_KERNEL);
+	func = kzalloc(sizeof(struct sdio_func), GFP_KERNEL);
 	if (!func)
 		return ERR_PTR(-ENOMEM);
-
-	memset(func, 0, sizeof(struct sdio_func));
 
 	func->card = card;