IB/ucm: Clean whitespace errors

As shown when 'let c_space_errors=1' is set in vim.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index 2e0d53e..1b09b73 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1223,10 +1223,10 @@
 }
 
 static const struct file_operations ucm_fops = {
-	.owner 	 = THIS_MODULE,
-	.open 	 = ib_ucm_open,
+	.owner	 = THIS_MODULE,
+	.open	 = ib_ucm_open,
 	.release = ib_ucm_close,
-	.write 	 = ib_ucm_write,
+	.write	 = ib_ucm_write,
 	.poll    = ib_ucm_poll,
 };