usb: mtu3: use @mult for HS isoc or intr

stable inclusion
from stable-5.10.64
commit 8a4439aaf4f729e4b4a76cd93e6b7792499f1728
bugzilla: 182256 https://gitee.com/openeuler/kernel/issues/I4EG0U

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8a4439aaf4f729e4b4a76cd93e6b7792499f1728

--------------------------------

commit fd7cb394 upstream.

For HS isoc or intr, should use @mult but not @burst
to save mult value.

Fixes: 4d79e042 ("usb: mtu3: add support for usb3.1 IP")
Cc: stable@vger.kernel.org
Signed-off-by: NChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1628836253-7432-2-git-send-email-chunfeng.yun@mediatek.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/usb/mtu3/mtu3_gadget.c

@@ -92,7 +92,7 @@ static int mtu3_ep_enable(struct mtu3_ep *mep)
 				usb_endpoint_xfer_int(desc)) {
 			interval = desc->bInterval;
 			interval = clamp_val(interval, 1, 16) - 1;
-			burst = (max_packet & GENMASK(12, 11)) >> 11;
+			mult = (max_packet & GENMASK(12, 11)) >> 11;
 		}
 		break;
 	default: