iommu/vt-d: Do not use GFP_ATOMIC when not needed

There is no need to use GFP_ATOMIC here. GFP_KERNEL is already used for
some other memory allocations just a few lines above.

Commit e3a981d ("iommu/vt-d: Convert allocations to GFP_KERNEL") has
changed the other memory allocation flags.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/e2a8a1019ffc8a86b4b4ed93def3623f60581274.1675542576.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: tititiou36

drivers/iommu/intel/irq_remapping.c

@@ -552,7 +552,7 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 		goto out_free_table;
 	}
 
-	bitmap = bitmap_zalloc(INTR_REMAP_TABLE_ENTRIES, GFP_ATOMIC);
+	bitmap = bitmap_zalloc(INTR_REMAP_TABLE_ENTRIES, GFP_KERNEL);
 	if (bitmap == NULL) {
 		pr_err("IR%d: failed to allocate bitmap\n", iommu->seq_id);
 		goto out_free_pages;