iommu/amd: Change log message severity

Use consistent log severity (pr_warn) to log all messages in SNP
enable path.
Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20240410101643.32309-1-vasant.hegde@amd.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/amd/init.c

@@ -3235,7 +3235,7 @@ static void iommu_snp_enable(void)
 	 * configured with V1 page table (DTE[Mode] = 0 is not supported).
 	 */
 	if (no_iommu || iommu_default_passthrough()) {
-		pr_err("SNP: IOMMU disabled or configured in passthrough mode, SNP cannot be supported.\n");
+		pr_warn("SNP: IOMMU disabled or configured in passthrough mode, SNP cannot be supported.\n");
 		goto disable_snp;
 	}
 
@@ -3246,7 +3246,7 @@ static void iommu_snp_enable(void)
 
 	amd_iommu_snp_en = check_feature(FEATURE_SNP);
 	if (!amd_iommu_snp_en) {
-		pr_err("SNP: IOMMU SNP feature not enabled, SNP cannot be supported.\n");
+		pr_warn("SNP: IOMMU SNP feature not enabled, SNP cannot be supported.\n");
 		goto disable_snp;
 	}