media: iris: fix error code in iris_load_fw_to_memory()

Return -ENOMEM if memremap() fails. Don't return success.

Fixes: d19b163356b8 ("media: iris: implement video firmware load/unload")
Cc: [e-mail]
Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Dikshita Agarwal <[e-mail]>
Signed-off-by: Bryan O'Donoghue <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/platform/qcom/iris/iris_firmware.c

···
 	}
 
 	mem_virt = memremap(mem_phys, res_size, MEMREMAP_WC);
-	if (!mem_virt)
+	if (!mem_virt) {
+		ret = -ENOMEM;
 		goto err_release_fw;
+	}
 
 	ret = qcom_mdt_load(dev, firmware, fw_name,
 			    pas_id, mem_virt, mem_phys, res_size, NULL);