cifs: replace code with free_rsp_buf()

The functionality provided by free_rsp_buf() is duplicated in a number
of places. Replace these instances with a call to free_rsp_buf().

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Shirish Pargaonkar <spargaonkar@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>

fs/cifs/cifsproto.h

@@ -36,6 +36,7 @@ extern struct smb_hdr *cifs_buf_get(void);
 extern void cifs_buf_release(void *);
 extern struct smb_hdr *cifs_small_buf_get(void);
 extern void cifs_small_buf_release(void *);
+extern void free_rsp_buf(int, void *);
 extern void cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx,
 					struct kvec *iov);
 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,