nvmem: core: drop the removal of the cells in nvmem_add_cells()

If nvmem_add_cells() fails, the whole nvmem_register() will fail
and the cells will then be removed anyway. This is a preparation
to introduce a nvmem_add_one_cell() which can then be used by
nvmem_add_cells().

This is then the same to what nvmem_add_cells_from_table() and
nvmem_add_cells_from_of() do.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230206134356.839737-15-srinivas.kandagatla@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/nvmem/core.c

@@ -515,7 +515,7 @@ static int nvmem_add_cells(struct nvmem_device *nvmem,
 		    int ncells)
 {
 	struct nvmem_cell_entry **cells;
-	int i, rval;
+	int i, rval = 0;
 
 	cells = kcalloc(ncells, sizeof(*cells), GFP_KERNEL);
 	if (!cells)
@@ -525,28 +525,22 @@ static int nvmem_add_cells(struct nvmem_device *nvmem,
 		cells[i] = kzalloc(sizeof(**cells), GFP_KERNEL);
 		if (!cells[i]) {
 			rval = -ENOMEM;
-			goto err;
+			goto out;
 		}
 
 		rval = nvmem_cell_info_to_nvmem_cell_entry(nvmem, &info[i], cells[i]);
 		if (rval) {
 			kfree(cells[i]);
-			goto err;
+			goto out;
 		}
 
 		nvmem_cell_entry_add(cells[i]);
 	}
 
+out:
 	/* remove tmp array */
 	kfree(cells);
 
-	return 0;
-err:
-	while (i--)
-		nvmem_cell_entry_drop(cells[i]);
-
-	kfree(cells);
-
 	return rval;
 }