linux-imx

ARM: cleanup: clk_get() error handling

Use the correct IS_ERR() to determine if clk_get() returned an error.
Set timer->fclk to be an error value initially, and check everywhere
using IS_ERR().  This keeps the range of valid values for 'struct clk'
consistent.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>