drivers/infiniband: Remove unnecessary casts of private_data

Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/infiniband/hw/ipath/ipath_file_ops.c

@@ -2055,7 +2055,7 @@ static int ipath_close(struct inode *in, struct file *fp)
 
 	mutex_lock(&ipath_mutex);
 
-	fd = (struct ipath_filedata *) fp->private_data;
+	fd = fp->private_data;
 	fp->private_data = NULL;
 	pd = fd->pd;
 	if (!pd) {