remoteproc/mtk_scp: Remove timeout variable from scp_ipi_send()

That variable was used twice, but now it's just used once to store
msecs_to_jiffies(wait), fed to wait_event_timeout(): we might as
well remove it for the sake of cleaning up.

This brings no functional changes.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230104115341.320951-3-angelogioacchino.delregno@collabora.comSigned-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

drivers/remoteproc/mtk_scp_ipi.c

@@ -160,7 +160,6 @@ int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
 		 unsigned int wait)
 {
 	struct mtk_share_obj __iomem *send_obj = scp->send_buf;
-	unsigned long timeout;
 	u32 val;
 	int ret;
 
@@ -197,10 +196,9 @@ int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
 
 	if (wait) {
 		/* wait for SCP's ACK */
-		timeout = msecs_to_jiffies(wait);
 		ret = wait_event_timeout(scp->ack_wq,
 					 scp->ipi_id_ack[id],
-					 timeout);
+					 msecs_to_jiffies(wait));
 		scp->ipi_id_ack[id] = false;
 		if (WARN(!ret, "scp ipi %d ack time out !", id))
 			ret = -EIO;