ASoC: Intel: Skylake: Fix uninitialized return

On failure to get dsp_ops, dsp_init returns error without assigning ret. ret
is assigned in code path which will never be executed. Fix it.

Fixes: f77d443c4c29 ("ASoC: Intel: Skylake: Fix to free resources for dsp_init failure"
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-messages.c

@@ -278,8 +278,8 @@ int skl_init_dsp(struct skl *skl)
 
 	ops = skl_get_dsp_ops(skl->pci->device);
 	if (!ops) {
-		goto unmap_mmio;
 		ret = -EIO;
+		goto unmap_mmio;
 	}
 
 	loader_ops = ops->loader_ops();