cifs: remove redundant assignment to variable rc

Variable rc is being initialized with a value that is never read
and rc is being re-assigned a little later on. The assignment is
redundant and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/smb2pdu.c

@@ -3617,7 +3617,7 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
 	  unsigned int *nbytes, char **buf, int *buf_type)
 {
 	struct smb_rqst rqst;
-	int resp_buftype, rc = -EACCES;
+	int resp_buftype, rc;
 	struct smb2_read_plain_req *req = NULL;
 	struct smb2_read_rsp *rsp = NULL;
 	struct kvec iov[1];