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>

This patch additionally simplifies one case where the free, and thus the
jump to the end of the function, is not needed.

Signed-off-by: Julia Lawall <julia.law...@lip6.fr>

---
 drivers/staging/lustre/lustre/llite/dir.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c 
b/drivers/staging/lustre/lustre/llite/dir.c
index f17154a..4b0de8d 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -754,10 +754,8 @@ int ll_dir_setstripe(struct inode *inode, struct 
lov_user_md *lump,
                char *buf;
 
                param = kzalloc(MGS_PARAM_MAXLEN, GFP_NOFS);
-               if (!param) {
-                       rc = -ENOMEM;
-                       goto end;
-               }
+               if (!param)
+                       return -ENOMEM;
 
                buf = param;
                /* Get fsname and assume devname to be -MDT0000. */
@@ -786,8 +784,7 @@ int ll_dir_setstripe(struct inode *inode, struct 
lov_user_md *lump,
                rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
 
 end:
-               if (param != NULL)
-                       kfree(param);
+               kfree(param);
        }
        return rc;
 }

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