coresight: core: Remove unneeded semicolon

Fixes coccicheck warning:

./drivers/hwtracing/coresight/coresight-core.c:421:4-5: Unneeded semicolon
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20201127175256.1092685-3-mathieu.poirier@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/hwtracing/coresight/coresight-core.c

@@ -418,7 +418,7 @@ static int coresight_enable_source(struct coresight_device *csdev, u32 mode)
 			if (ret) {
 				coresight_control_assoc_ectdev(csdev, false);
 				return ret;
-			};
+			}
 		}
 		csdev->enable = true;
 	}