dmatest: remove IS_ERR_OR_NULL checks of debugfs calls

There is a really little chance when we are able to create a directory and are
not able to create nodes under it. So, this patch just removes those checks.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dan Williams <djbw@fb.com>

1 files changed, 5 insertions, 12 deletions

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 91716f404c03..eae598986b81 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -1131,7 +1131,6 @@ static const struct file_operations dtf_results_fops = {
 static int dmatest_register_dbgfs(struct dmatest_info *info)
 {
         struct dentry *d;
-        int ret = -ENOMEM;
 
         d = debugfs_create_dir("dmatest", NULL);
         if (IS_ERR(d))
@@ -1142,24 +1141,18 @@ static int dmatest_register_dbgfs(struct dmatest_info *info)
         info->root = d;
 
         /* Run or stop threaded test */
-        d = debugfs_create_file("run", S_IWUSR | S_IRUGO, info->root,
-                                info, &dtf_run_fops);
-        if (IS_ERR_OR_NULL(d))
-                goto err_node;
+        debugfs_create_file("run", S_IWUSR | S_IRUGO, info->root, info,
+                            &dtf_run_fops);
 
         /* Results of test in progress */
-        d = debugfs_create_file("results", S_IRUGO, info->root, info,
-                                &dtf_results_fops);
-        if (IS_ERR_OR_NULL(d))
-                goto err_node;
+        debugfs_create_file("results", S_IRUGO, info->root, info,
+                            &dtf_results_fops);
 
         return 0;
 
-err_node:
-        debugfs_remove_recursive(info->root);
 err_root:
         pr_err("dmatest: Failed to initialize debugfs\n");
-        return ret;
+        return -ENOMEM;
 }
 
 static int __init dmatest_init(void)