iommu/fsl_pamu: Remove unnecessary null test before kfree

Fix checkpatch warning:
WARNING: kfree(NULL) is safe this check is probably not required

Cc: Joerg Roedel <joro@8bytes.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: iommu@lists.linux-foundation.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index 93072ba44b1d..0009dffe8000 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -1118,8 +1118,7 @@ static int fsl_pamu_set_windows(struct iommu_domain *domain, u32 w_count)
         ret = pamu_set_domain_geometry(dma_domain, &domain->geometry,
                                 ((w_count > 1) ? w_count : 0));
         if (!ret) {
-                if (dma_domain->win_arr)
-                        kfree(dma_domain->win_arr);
+                kfree(dma_domain->win_arr);
                 dma_domain->win_arr = kzalloc(sizeof(struct dma_window) *
                                                           w_count, GFP_ATOMIC);
                 if (!dma_domain->win_arr) {