[PATCH -next] iommu/amd: Fix non static symbol warning

[Wei Yongjun]

Fixes the following sparse warning:

drivers/iommu/amd_iommu.c:106:1: warning:
 symbol '__pcpu_scope_flush_queue' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyj.lk@xxxxxxxxx>
---
 drivers/iommu/amd_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 96de97a..bf5ec0c 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -103,7 +103,7 @@ struct flush_queue {
 	struct flush_queue_entry *entries;
 };
 
-DEFINE_PER_CPU(struct flush_queue, flush_queue);
+static DEFINE_PER_CPU(struct flush_queue, flush_queue);
 
 static atomic_t queue_timer_on;
 static struct timer_list queue_timer;