sh: 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: Yoshinori Sato <[e-mail]>
Cc: Rich Felker <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

arch/sh/kernel/kdebugfs.c

···
 static int __init arch_kdebugfs_init(void)
 {
 	arch_debugfs_dir = debugfs_create_dir("sh", NULL);
-	if (!arch_debugfs_dir)
-		return -ENOMEM;
-
 	return 0;
 }
 arch_initcall(arch_kdebugfs_init);

arch/sh/mm/asids-debugfs.c

···
 
 static int __init asids_debugfs_init(void)
 {
-	struct dentry *asids_dentry;
-
-	asids_dentry = debugfs_create_file("asids", S_IRUSR, arch_debugfs_dir,
-					   NULL, &asids_debugfs_fops);
-	if (!asids_dentry)
-		return -ENOMEM;
-
-	return PTR_ERR_OR_ZERO(asids_dentry);
+	debugfs_create_file("asids", S_IRUSR, arch_debugfs_dir, NULL,
+			    &asids_debugfs_fops);
+	return 0;
 }
 device_initcall(asids_debugfs_init);

arch/sh/mm/cache-debugfs.c

···
 
 static int __init cache_debugfs_init(void)
 {
-	struct dentry *dcache_dentry, *icache_dentry;
-
-	dcache_dentry = debugfs_create_file("dcache", S_IRUSR, arch_debugfs_dir,
-					    (unsigned int *)CACHE_TYPE_DCACHE,
-					    &cache_debugfs_fops);
-	if (!dcache_dentry)
-		return -ENOMEM;
-
-	icache_dentry = debugfs_create_file("icache", S_IRUSR, arch_debugfs_dir,
-					    (unsigned int *)CACHE_TYPE_ICACHE,
-					    &cache_debugfs_fops);
-	if (!icache_dentry) {
-		debugfs_remove(dcache_dentry);
-		return -ENOMEM;
-	}
-
+	debugfs_create_file("dcache", S_IRUSR, arch_debugfs_dir,
+			    (void *)CACHE_TYPE_DCACHE, &cache_debugfs_fops);
+	debugfs_create_file("icache", S_IRUSR, arch_debugfs_dir,
+			    (void *)CACHE_TYPE_ICACHE, &cache_debugfs_fops);
 	return 0;
 }
 module_init(cache_debugfs_init);

arch/sh/mm/pmb.c

···
 
 static int __init pmb_debugfs_init(void)
 {
-	struct dentry *dentry;
-
-	dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO,
-				     arch_debugfs_dir, NULL, &pmb_debugfs_fops);
-	if (!dentry)
-		return -ENOMEM;
-
+	debugfs_create_file("pmb", S_IFREG | S_IRUGO, arch_debugfs_dir, NULL,
+			    &pmb_debugfs_fops);
 	return 0;
 }
 subsys_initcall(pmb_debugfs_init);

arch/sh/mm/tlb-debugfs.c

···
 
 static int __init tlb_debugfs_init(void)
 {
-	struct dentry *itlb, *utlb;
-
-	itlb = debugfs_create_file("itlb", S_IRUSR, arch_debugfs_dir,
-				   (unsigned int *)TLB_TYPE_ITLB,
-				   &tlb_debugfs_fops);
-	if (unlikely(!itlb))
-		return -ENOMEM;
-
-	utlb = debugfs_create_file("utlb", S_IRUSR, arch_debugfs_dir,
-				   (unsigned int *)TLB_TYPE_UTLB,
-				   &tlb_debugfs_fops);
-	if (unlikely(!utlb)) {
-		debugfs_remove(itlb);
-		return -ENOMEM;
-	}
-
+	debugfs_create_file("itlb", S_IRUSR, arch_debugfs_dir,
+			    (void *)TLB_TYPE_ITLB, &tlb_debugfs_fops);
+	debugfs_create_file("utlb", S_IRUSR, arch_debugfs_dir,
+			    (void *)TLB_TYPE_UTLB, &tlb_debugfs_fops);
 	return 0;
 }
 module_init(tlb_debugfs_init);