misc: bcm-vk: fix set_q_num API precedence issue

Change set_q_num API to use if-else to make it more explicit,
and avoid a precedence rule issue.
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NDesmond Yan <desmond.yan@broadcom.com>
Signed-off-by: NScott Branden <scott.branden@broadcom.com>
Link: https://lore.kernel.org/r/20210129060403.14801-1-scott.branden@broadcom.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/bcm-vk/bcm_vk_msg.c

@@ -52,8 +52,14 @@ static u32 get_q_num(const struct vk_msg_blk *msg)
 
 static void set_q_num(struct vk_msg_blk *msg, u32 q_num)
 {
-	msg->trans_id = (msg->trans_id & ~BCM_VK_MSG_Q_MASK) |
-		(q_num >= VK_MSGQ_PER_CHAN_MAX) ? VK_MSGQ_NUM_DEFAULT : q_num;
+	u32 trans_q;
+
+	if (q_num >= VK_MSGQ_PER_CHAN_MAX)
+		trans_q = VK_MSGQ_NUM_DEFAULT;
+	else
+		trans_q = q_num;
+
+	msg->trans_id = (msg->trans_id & ~BCM_VK_MSG_Q_MASK) | trans_q;
 }
 
 static u32 get_msg_id(const struct vk_msg_blk *msg)