jfs: remove redundant initialization to pointer ip

The pointer ip is being initialized with a value that is never read, it
is being re-assigned later on. The assignment is redundant and can be
removed. Cleans up clang scan warning:

fs/jfs/namei.c:886:16: warning: Value stored to 'ip' during its
initialization is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Dave Kleikamp <[e-mail]>

fs/jfs/namei.c

···
 	struct component_name dname;
 	u32 ssize;		/* source pathname size */
 	struct btstack btstack;
-	struct inode *ip = d_inode(dentry);
+	struct inode *ip;
 	s64 xlen = 0;
 	int bmask = 0, xsize;
 	s64 xaddr;