scsi: fnic: Delete incorrect debugfs error handling

Debugfs functions are not supposed to require error checking and, in fact,
adding checks would normally lead to the driver refusing to load when
CONFIG_DEBUGFS is disabled.

What saves us here is that this code checks for NULL instead of error
pointers so the error checking is all dead code.  Delete it.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/a5c237cd-449b-4f9d-bcff-6285fb7c28d1@stanley.mountain
Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Dan Carpenter

drivers/scsi/fnic/fnic_debugfs.c

@@ -679,46 +679,23 @@ static const struct file_operations fnic_reset_debugfs_fops = {
  */
 int fnic_stats_debugfs_init(struct fnic *fnic)
 {
-	int rc = -1;
 	char name[16];
 
 	snprintf(name, sizeof(name), "host%d", fnic->host->host_no);
 
-	if (!fnic_stats_debugfs_root) {
-		pr_debug("fnic_stats root doesn't exist\n");
-		return rc;
-	}
-
 	fnic->fnic_stats_debugfs_host = debugfs_create_dir(name,
 						fnic_stats_debugfs_root);
-
-	if (!fnic->fnic_stats_debugfs_host) {
-		pr_debug("Cannot create host directory\n");
-		return rc;
-	}
-
 	fnic->fnic_stats_debugfs_file = debugfs_create_file("stats",
 						S_IFREG|S_IRUGO|S_IWUSR,
 						fnic->fnic_stats_debugfs_host,
 						fnic,
 						&fnic_stats_debugfs_fops);
-
-	if (!fnic->fnic_stats_debugfs_file) {
-		pr_debug("Cannot create host stats file\n");
-		return rc;
-	}
-
 	fnic->fnic_reset_debugfs_file = debugfs_create_file("reset_stats",
 						S_IFREG|S_IRUGO|S_IWUSR,
 						fnic->fnic_stats_debugfs_host,
 						fnic,
 						&fnic_reset_debugfs_fops);
-	if (!fnic->fnic_reset_debugfs_file) {
-		pr_debug("Cannot create host stats file\n");
-		return rc;
-	}
-	rc = 0;
-	return rc;
+	return 0;
 }
 
 /*