fix bug in maisi vae (Project-MONAI#8517)

Fixes # .

### Description

A few sentences describing the changes proposed in this pull request.

### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

Signed-off-by: root <[email protected]>
Co-authored-by: root <[email protected]>
Co-authored-by: YunLiu <[email protected]>

Author: 3 people

monai/apps/generation/maisi/networks/autoencoderkl_maisi.py

@@ -232,7 +232,7 @@ def forward(self, x: torch.Tensor) -> torch.Tensor:
         if self.print_info:
             logger.info(f"Number of splits: {self.num_splits}")
 
-        if self.dim_split <= 1 and self.num_splits <= 1:
+        if self.num_splits <= 1:
             x = self.conv(x)
             return x