Return m_ini when minimizer fails.

src/tetrax/experiments/relax.py

@@ -122,4 +122,4 @@ def minimize_gibbs_free_energy(sample, Bext,tol_cg):
         return m_final
     else:
         print("\ndid not work :(\n")
-        #return m_ini
\ No newline at end of file
+        return m_ini
\ No newline at end of file