[PATCH] powerpc/pseries/iommu: update outdated comment for renamed iommu_dev_setup_pSeries()

[Kexin Sun]

The function iommu_dev_setup_pSeries() was renamed to
pci_dma_dev_setup_pSeries() by commit 12d04eef927b
("[POWERPC] Refactor 64 bits DMA operations").  Update
the stale reference in pci_dma_bus_setup_pSeries().

Assisted-by: unnamed:deepseek-v3.2 coccinelle
Signed-off-by: Kexin Sun <kexin...@smail.nju.edu.cn>
---
 arch/powerpc/platforms/pseries/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/iommu.c 
b/arch/powerpc/platforms/pseries/iommu.c
index 3e1f915fe4f6..93741319fad7 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -634,7 +634,7 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus)
 
        if (bus->self) {
                /* This is not a root bus, any setup will be done for the
-                * device-side of the bridge in iommu_dev_setup_pSeries().
+                * device-side of the bridge in pci_dma_dev_setup_pSeries().
                 */
                return;
        }
-- 
2.25.1