nvdimm/pfn_dev: Avoid unnecessary endian conversion

use the local variable that already have the converted values.

No functional change in this patch.

Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20230809053512.350660-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

drivers/nvdimm/pfn_devs.c

@@ -601,14 +601,12 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
 		return -EOPNOTSUPP;
 	}
 
-	if (!IS_ALIGNED(res->start + le32_to_cpu(pfn_sb->start_pad),
-				memremap_compat_align())) {
+	if (!IS_ALIGNED(res->start + start_pad, memremap_compat_align())) {
 		dev_err(&nd_pfn->dev, "resource start misaligned\n");
 		return -EOPNOTSUPP;
 	}
 
-	if (!IS_ALIGNED(res->end + 1 - le32_to_cpu(pfn_sb->end_trunc),
-				memremap_compat_align())) {
+	if (!IS_ALIGNED(res->end + 1 - end_trunc, memremap_compat_align())) {
 		dev_err(&nd_pfn->dev, "resource end misaligned\n");
 		return -EOPNOTSUPP;
 	}