ASoC: SOF: amd: Remove unneeded semicolon

Fix the following coccicheck warnings:

./sound/soc/sof/amd/acp.c:280:3-4: Unneeded semicolon.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220309004929.125558-2-jiapeng.chong@linux.alibaba.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/amd/acp.c

@@ -277,7 +277,7 @@ static irqreturn_t acp_irq_thread(int irq, void *context)
 				dev_err(sdev->dev, "%s: Failed to acquire HW lock\n", __func__);
 				return IRQ_NONE;
 			}
-		};
+		}
 
 		sof_ops(sdev)->irq_thread(irq, sdev);
 		val |= ACP_DSP_TO_HOST_IRQ;