Revert "disp: msm: sde: update smmu fault handler to print debug info"

This reverts commit 0623a02a84. It leads to
panic during smmu faults because we do not have any recovery. Reverting
this will give the control to the client to dump if necessary.

Change-Id: I85982e129cabc73b041e25c35e965117d60f3bfa
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>

msm/msm_smmu.c

@@ -431,10 +431,11 @@ static int msm_smmu_fault_handler(struct iommu_domain *domain,
 		int flags, void *token)
 {
 	struct msm_smmu_client *client;
+	int rc = -EINVAL;
 
 	if (!token) {
 		DRM_ERROR("Error: token is NULL\n");
-		return -ENOSYS;
+		return -EINVAL;
 	}
 
 	client = (struct msm_smmu_client *)token;
@@ -448,7 +449,7 @@ static int msm_smmu_fault_handler(struct iommu_domain *domain,
 	 * return -ENOSYS to allow smmu driver to dump out useful
 	 * debug info.
 	 */
-	return -ENOSYS;
+	return rc;
 }
 
 /**