Fix indentation causing code style failure

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index ae35efc..379648c 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -1711,7 +1711,7 @@
         status = psa_copy_key_material_into_slot(
             slot, (uint8_t *) (&slot_number), sizeof(slot_number));
         if (status != PSA_SUCCESS) {
-                return status;
+            return status;
         }
     }