iommu/amd: Fix DTE_IRQ_PHYS_ADDR_MASK macro

Interrupt Table Root Pointer is 52 bit and table must be aligned to start
on a 128-byte boundary. Hence first 6 bits are ignored.

Current code uses address mask as 45 instead of 46bit. Use GENMASK_ULL
macro instead of manually generating address mask.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230609090327.5923-1-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: hegdevasant

drivers/iommu/amd/amd_iommu_types.h

@@ -284,7 +284,7 @@
 #define AMD_IOMMU_PGSIZES_V2	(PAGE_SIZE | (1ULL << 21) | (1ULL << 30))
 
 /* Bit value definition for dte irq remapping fields*/
-#define DTE_IRQ_PHYS_ADDR_MASK	(((1ULL << 45)-1) << 6)
+#define DTE_IRQ_PHYS_ADDR_MASK		GENMASK_ULL(51, 6)
 #define DTE_IRQ_REMAP_INTCTL_MASK	(0x3ULL << 60)
 #define DTE_IRQ_REMAP_INTCTL    (2ULL << 60)
 #define DTE_IRQ_REMAP_ENABLE    1ULL