iommu/amd: Remove double zero check

The free_pages() does zero check, therefore remove double zero
check here.

Signed-off-by: Libing Zhou <libing.zhou@nokia-sbell.com>
Link: https://lore.kernel.org/r/20200722064450.GA63618@hzling02.china.nsn-net.net
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 232683e..958050c 100644 (file)
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -720,21 +720,14 @@ static void iommu_enable_ppr_log(struct amd_iommu *iommu)
 
 static void __init free_ppr_log(struct amd_iommu *iommu)
 {
-       if (iommu->ppr_log == NULL)
-               return;
-
        free_pages((unsigned long)iommu->ppr_log, get_order(PPR_LOG_SIZE));
 }
 
 static void free_ga_log(struct amd_iommu *iommu)
 {
 #ifdef CONFIG_IRQ_REMAP
-       if (iommu->ga_log)
-               free_pages((unsigned long)iommu->ga_log,
-                           get_order(GA_LOG_SIZE));
-       if (iommu->ga_log_tail)
-               free_pages((unsigned long)iommu->ga_log_tail,
-                           get_order(8));
+       free_pages((unsigned long)iommu->ga_log, get_order(GA_LOG_SIZE));
+       free_pages((unsigned long)iommu->ga_log_tail, get_order(8));
 #endif
 }