tee: optee: do not check memref size on return from Secure World

Commit c650b8d ("tee: optee: do not check memref size on return
from Secure World") was mistakenly lost in commit 4602c58 ("optee:
refactor driver with internal callbacks"). Remove the unwanted code
again.

Fixes: 4602c58 ("optee: refactor driver with internal callbacks")
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>

Author: jforissier

drivers/tee/optee/smc_abi.c

@@ -71,16 +71,6 @@ static int from_msg_param_tmp_mem(struct tee_param *p, u32 attr,
 	p->u.memref.shm_offs = mp->u.tmem.buf_ptr - pa;
 	p->u.memref.shm = shm;
 
-	/* Check that the memref is covered by the shm object */
-	if (p->u.memref.size) {
-		size_t o = p->u.memref.shm_offs +
-			   p->u.memref.size - 1;
-
-		rc = tee_shm_get_pa(shm, o, NULL);
-		if (rc)
-			return rc;
-	}
-
 	return 0;
 }