usb: gadget: bdc: prefer pointer dereference to pointer type

Prefer kzalloc(sizeof(*bd_table)...) over
kzalloc(sizeof(struct bd_table)

Cc: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1610505748-30616-3-git-send-email-chunfeng.yun@mediatek.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/udc/bdc/bdc_ep.c

@@ -147,7 +147,7 @@ static int ep_bd_list_alloc(struct bdc_ep *ep)
 	/* Allocate memory for each table */
 	for (index = 0; index < num_tabs; index++) {
 		/* Allocate memory for bd_table structure */
-		bd_table = kzalloc(sizeof(struct bd_table), GFP_ATOMIC);
+		bd_table = kzalloc(sizeof(*bd_table), GFP_ATOMIC);
 		if (!bd_table)
 			goto fail;