Fix code stayle in iop export public-key function

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/tf-psa-crypto/core/psa_crypto.c b/tf-psa-crypto/core/psa_crypto.c
index bd26451..e18647f 100644
--- a/tf-psa-crypto/core/psa_crypto.c
+++ b/tf-psa-crypto/core/psa_crypto.c
@@ -8192,7 +8192,7 @@
     }
 
     status = mbedtls_psa_ecp_generate_key_iop_complete(&operation->ctx, key_data,
-                                                   sizeof(key_data), &key_len);
+                                                       sizeof(key_data), &key_len);
     if (status != PSA_SUCCESS) {
         goto exit;
     }