We were getting build warning about unused variable 'ret'.
The commit c749db571dcf has removed the use of ret but missed removing
the variable which is unused now.
Fixes: c749db571dcf ("mfd: lm3533: Simplify function return logic") Signed-off-by: Sudip Mukherjee <[email protected]> Signed-off-by: Lee Jones <[email protected]>