lib: 842: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Haren Myneni <haren@us.ibm.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190612153440.GA21006@kroah.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lib/842/842_debugfs.h

@@ -22,8 +22,6 @@ static int __init sw842_debugfs_create(void)
 		return -ENODEV;
 
 	sw842_debugfs_root = debugfs_create_dir(MODULE_NAME, NULL);
-	if (IS_ERR(sw842_debugfs_root))
-		return PTR_ERR(sw842_debugfs_root);
 
 	for (i = 0; i < ARRAY_SIZE(template_count); i++) {
 		char name[32];
@@ -46,8 +44,7 @@ static int __init sw842_debugfs_create(void)
 
 static void __exit sw842_debugfs_remove(void)
 {
-	if (sw842_debugfs_root && !IS_ERR(sw842_debugfs_root))
-		debugfs_remove_recursive(sw842_debugfs_root);
+	debugfs_remove_recursive(sw842_debugfs_root);
 }
 
 #endif