staging/rdma/hfi1: diag.c add missing braces

Else statements should continue using braces even if there is only 1 line in
the block.  Found by checkpatch --strict
Signed-off-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rdma/hfi1/diag.c

@@ -954,12 +954,14 @@ static ssize_t hfi1_snoop_read(struct file *fp, char __user *data,
 				ret = -EFAULT;
 			else
 				ret = packet->total_len;
-		} else
+		} else {
 			ret = -EINVAL;
+		}
 
 		kfree(packet);
-	} else
+	} else {
 		spin_unlock_irqrestore(&dd->hfi1_snoop.snoop_lock, flags);
+	}
 
 	return ret;
 }