iommu/mediatek-v1: Fix a build warning for a unused variable 'data'

This patch fixes a build warning:
drivers/iommu/mtk_iommu_v1.c: In function 'mtk_iommu_release_device':
>> drivers/iommu/mtk_iommu_v1.c:467:25: warning: variable 'data' set but
>> not used [-Wunused-but-set-variable]
467 |  struct mtk_iommu_data *data;
|                         ^~~~

It's reported at:
https://lore.kernel.org/linux-iommu/202005191458.gY38V8bU%25lkp@intel.com/T/#u

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/1589875064-662-1-git-send-email-yong.wu@mediatek.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index f353b072a5d08c88c8afd6df3f69d105212cdb35..c9d79cff4d178ee0062bb4a6c1fa9515dbe71c0a 100644 (file)
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -469,12 +469,10 @@ static void mtk_iommu_probe_finalize(struct device *dev)
 static void mtk_iommu_release_device(struct device *dev)
 {
        struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
-       struct mtk_iommu_data *data;
 
        if (!fwspec || fwspec->ops != &mtk_iommu_ops)
                return;
 
-       data = dev_iommu_priv_get(dev);
        iommu_fwspec_free(dev);
 }