staging: lustre: lmv: remove unneeded null test before free

Kfree can cope with a null argument, so drop null tests.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression ptr; @@

- if (ptr != NULL)
  kfree(ptr);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/lmv/lmv_obd.c

@@ -504,7 +504,6 @@ static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
 		lmv->tgts = newtgts;
 		lmv->tgts_size = newsize;
 		smp_rmb();
-		if (old)
 		kfree(old);
 
 		CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
@@ -780,7 +779,6 @@ static int lmv_fid2path(struct obd_export *exp, int len, void *karg, void *uarg)
 	goto repeat_fid2path;
 
 out_fid2path:
-	if (remote_gf != NULL)
 	kfree(remote_gf);
 	return rc;
 }