drivers/infiniband: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 9c5c66d..65eb892 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -2055,7 +2055,7 @@
 
 	mutex_lock(&ipath_mutex);
 
-	fd = (struct ipath_filedata *) fp->private_data;
+	fd = fp->private_data;
 	fp->private_data = NULL;
 	pd = fd->pd;
 	if (!pd) {