configfs: Fix Trivial Warning in fs/configfs/symlink.c

I observed the following build warning with fs/configfs/symlink.c:

fs/configfs/symlink.c: In function 'configfs_symlink':
fs/configfs/symlink.c:138: warning: 'target_item' may be used uninitialized in this function

Here is a small fix for this.

Cc: Patrick Mochel <mochel@osdl.org>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Sachin P Sant <sachinp@linux.vnet.ibm.com>
Signed-Off-By: Subrata Modak <subrata@linux.vnet.ibm.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

fs/configfs/symlink.c

@@ -135,7 +135,7 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna
 	struct path path;
 	struct configfs_dirent *sd;
 	struct config_item *parent_item;
-	struct config_item *target_item;
+	struct config_item *target_item = NULL;
 	struct config_item_type *type;
 
 	ret = -EPERM;  /* What lack-of-symlink returns */