FPU tests: Fix return types for FPU test functions

Functions are defined to have psa_status_t return type, thus they should
always return a value, otherwise compile warning is generated.

Change-Id: I4c904b7b5ea47680f77093e2de9219e02d1b39fc
Signed-off-by: Bohdan Hunko <Bohdan.Hunko@infineon.com>
1 file changed