crypto: iaa - Remove unnecessary debugfs_create_dir() error check in iaa_crypto_debugfs_init()

This patch removes the debugfs_create_dir() error checking in
iaa_crypto_debugfs_init(). Because the debugfs_create_dir() is developed
in a way that the caller can safely handle the errors that
occur during the creation of DebugFS nodes.
Signed-off-by: Minjie Du <duminjie@vivo.com>
Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/intel/iaa/iaa_crypto_stats.c

@@ -275,8 +275,6 @@ int __init iaa_crypto_debugfs_init(void)
 		return -ENODEV;
 
 	iaa_crypto_debugfs_root = debugfs_create_dir("iaa_crypto", NULL);
-	if (!iaa_crypto_debugfs_root)
-		return -ENOMEM;
 
 	debugfs_create_u64("max_comp_delay_ns", 0644,
 			   iaa_crypto_debugfs_root, &max_comp_delay_ns);